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City of Rexburg Development Code: SUBDIVISIONS
CHAPTER 11: SUBDIVISIONS
*All Zoning Standards apply.
(See 3.01-3.06)
Section 1
Section 5: Required Improvements
11.01.010. Purpose
11.05.010. Subdivider responsibilities
11.01.020. Definitions
11.05.020. List of required improvements
11.01.030. Jurisdictions
11.05.030. Pedestrian Way Standards
11.05.040. Public Sites, Open Spaces, and Natural Features
Section 2: Procedure
11.05.050. Waste Supply Standards
11.02.010. Pre-Application
11.05.060. Storm Water Standards
11.02.020. Pre-Application Review
11.05.070. Sewer Collection Standards
11.02.030. Preliminary Plat
11.05.080. Traffic Study
11.02.040. Final Plat
11.05.090. Streets
11.02.050. Construction Drawings
11.05.100. Street Standards
11.02.060. Bonding
11.05.110. Street Intersections and Alignments
11.02.070. Request Mylar
11.02.080. File with County Recorder
11.05.120. Traffic Studies
11.02.090. As Built Plans
11.05.130. Street Lighting
11.02.100. Short Plat
11.05.140. Conduit
Section 3: Data Requirements
Section 6: Special Developments
Preliminary Plat
11.06.010. Condominium
11.03.010. Preliminary Plat Form of Presentation
11.06.020. Subdivision within a floodplain
11.03.020. Existing Conditions Data
11.06.030. Subdivision for a cemetery
11.03.030. Proposed Conditions Data
11.06.040. Areas of Critical Concern
11.03.040. Proposed Utility Methods
Final Plat
11.03.050. Final Plat Form of Presentation
Section 4: Grid Compliance
11.04.010. Block Requirements
11.04.020. Lot Requirements
11.04.030. Monuments
11.04.040. Street Names
11.04.050. Addressing
SECTION 1
11.01.010. Purpose and Objectives
The Subdivision Code for the City of Rexburg, Idaho, establishes requirements for subdividing land within the city
and within the Area of City Impact, establishes procedures for processing plats, adopts general design standards,
establishes street and utility requirements for new subdivisions and regulates special developments.
11.01.020. Definitions
The following terms are defined in Chapter 2:
Block
Board
DEQ
Exception, Land
Floodway fringe
Minor Residential Street
Public Works Director
Standard Drawings and Specifications
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Unsuitable Land
11.01.030. Jurisdictions
The regulations apply to the subdividing of all land within the city and include the following:
a. 3 or More Parcels.
Subdivision of land into three (3) or more parcels for transfer of ownership.
Publicly Maintained Street Frontage.
1. These lots or parcels created shall front a publicly maintained
street unless approved by the Commission and City Council.
b. Dedication of a Street or Alley.
The dedication of any street or alley through or along any tract of land
except where such dedication is initiated at the requirement of a public body.
c. Condominiums.
Condominium Projects as permitted by Idaho statutes.(See 11.06.010.)
d.
The resubdivision of a parcel of land into more than one (1) parcel except as provided in the exceptions
listed below:
Lot Line Adjustment.
1. A lot-line-adjustment which does not reduce the area, frontage, width, depth,
or building setback lines to fall below the minimums required by the zoning regulations.
Large Lots for Agriculture.
2. A subdivision of land into parcels that are larger than forty (40) acres or
are lots in a section of land shown on the official U.S. Government General Land Office Township
Survey maps including resubdivisions and designed exclusively for agricultural purposes, and which
do not involve any new street dedication of the creation of private easement access to lots or parcels
which could otherwise be provided access to a publicly dedicated street. (See definition of
agriculture.)
Settlement of Estate or Court Decree.
3. An allocation of land in the settlement of an estate or a court
decree for the distribution of property with the stipulation that the land may not be divided into more
than four (4) parcels with a minimum size per parcel to be five (5) acres, or create lots that do not meet
the requirements of the zoning regulations.
Unwilling Sale.
4. The unwilling sale of land as a result of legal condemnation as defined and allowed in
the Idaho Code and when the dedication of a right-of-way for public purposes is initiated by a public
body.
Trade or Sale to Straighten Boundaries.
5. The exchange of land for the purpose of straightening
property boundaries or by adding land to existing parcels by trade or sale which does not result in
change of the present land use or in any way result in land parcels which do not meet existing zoning
regulations.
SECTION 2 PROCEDURE
11.02.010. Pre-Application
Before filing an application for a preliminary plat, a concept drawing and any additional data to communicate
intentions and plans will be submitted to the Zoning Administrator by the sub-divider.
11.02.020. Pre-Application Review
The Zoning Administrator shall review said plans and data as submitted and within ten (10) working days shall
communicate to subdivider in writing as to general conformance and nonconformance with this Ordinance. Such
review may include guidelines from the implementation of various ordinances such as the Comprehensive Plan,
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zoning ordinances and similar plans or programs. The Zoning Administrator will advise the subdivider of actions
required for the proposed subdivision.
11.02.030. Preliminary Plat
a. Application.
If the subdivider elects to proceed with the platting process, he shall file with the City
Planning and Zoning Office at least twenty-one (21) days prior to the scheduled presentation before the
Commission,four (4) hard copies of the completed subdivision application form, four (4) 24” x 36” copies
of the Preliminary Plat with data as prescribed by the Commission, and one (1) digital copy of these
documents. (See Section 3 of this Chapter.)
b. Pay Fees.
Persons filing a subdivision plat within the City of Rexburg shall first have paid all fees as
established by resolution of the Council. Such fees may be reviewed and changed by resolution of the
Council at such time as the Council deems necessary.
c. Certification.
Upon receipt of the Preliminary Plat and all required data as provided herein, the City shall
certify the application as complete and shall affix the date of application acceptance thereon.
d. Staff Review.
The City shall transmit a copy of the application to its various departments and such other
agencies that have jurisdiction or an interest in the proposed subdivision for their review and
recommendation.
1. If no written reply is received from any of the various departments or interested agencies within
fourteen (14) days from the date of notification, approval of the Preliminary Plat by such department or
agency will be considered to be granted.
Possible Departments and Agencies:
2.
a) City Engineer
b) City Planning and Zoning Department
c) County Commissioners
d) City Council
e) Fire Department
f) GIS Department
g) Public Works Director
h) State Highway Department
i) Utility Companies
j) Irrigation District (if subdivision abuts or includes a canal or ditch)
k) Other department or agencies as necessary
e. Commission Action.
The Preliminary Plat shall be placed on the Commission agenda for consideration at
the next available regular meeting.
Review.
1. The Commission shall review the application and comments from the review agencies for
compliance to the City’s Comprehensive Plan, Development Code and applicable ordinances. The
Commission shall determine if further action will be necessary to complete the review and make
recommendations to City Council.
Amendment.
2. If the Commission determines that an amendment must be made to the Comprehensive
Plan and/or the Zoning Ordinance to approve the application, the Commission shall follow the
procedures detailed in 67-6509 IDAHO CODE.
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Recommendation.
3. The Commission will recommend to City Council the Preliminary Plat be
approved, approved conditionally or disapproved within thirty (30) days after the date of the meeting at
which the Preliminary Plat is first considered.
a) The Commission will then send a copy of the Preliminary Plat and the Commission’s findings or
Reasons for Decision to the City Council.
Reasons for Decision.
b) The reasons for such decision shall specify:
a) the ordinance and standards used in evaluating the application,
b) the reasons for approval or denial and
c) the actions, if any, that the applicant could take to gain approval of the proposal.
f. Council Action.
The Council shall act upon the report of the Commission within fourteen (14) days, or its
next regular available meeting following receipt of the report.
Testimony.
1. The Council may hear testimony of the representatives of the Commission and witnesses,
including interested citizens affected by the proposed subdivision.
Findings.
2. The Council shall base its findings upon the report and testimony presented before it and
declare its findings. It may sustain, modify, or reject the recommendations of the Commission, and
make such findings as are consistent with the provisions of this Ordinance and the Idaho Code. The
reasons for such decision shall specify:
a) the ordinance and standards used in evaluating the application
b) the reasons for approval or denial and
c) the actions, if any, that the applicant could take to gain approval of the proposal.
Reasons for Decision.
3. The reasons for such decision shall be stated in writing, a copy of which shall
be attached to one (1) copy of the preliminary plat and returned to the subdivider.
Approval Time Period.
4. Once the Preliminary Plat is approved, the approval is good for a period of
twelve (12) months from the date of approval. In the event a longer period elapses, the Preliminary Plat
must be reviewed by the Commission again.
Extension.
a) The time limits for acting on the preliminary plat may be extended by mutual consent
of the subdivider and the Commission and/or the Council.
Zone Changes.
5. Before final platting of the development, all required zone changes shall be obtained.
g. Development Agreement.
Prior to submitting a final plat, the subdivider shall work with the City Engineering Department to develop
a preliminary Development Agreement for review with the final plat. Conditions shall be established for:
1. requirements for the extent and manner in which roads shall be created and improved
2. water and sewer and other utility mains; piping connections, or other facilities shall be installed.
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11.02.040. Final Plat
a. Survey.
After approval or approval with conditions, the sub-divider may cause the subdivision, or part
thereof to be surveyed and a Final Plat prepared in accordance with the Preliminary Plat as approved. The
approved Preliminary and the Final Plat should match.
b. Application.
If the sub-divider elects to proceed with the platting process, he shall file with the City
Planning and Zoning Office, at least twenty-one (21) days prior to the scheduled presentation before the
Commission,four (4) copies of the completed subdivision application form as prescribed by the
Commission and four (4) 24” x 36” copies of the final plat with data as required by this section.
Plans and Specifications.
1. (See 11.03.050.) The final plat submission shall include plans and
specifications for all proposed improvements as required by this Ordinance.
Title.
2. A current Title Report or other evidence acceptable to the City showing proof of ownership of
the tract of land being platted shall be part of the application submission.
Certificates and Acknowledgements.
3. The final plat, when submitted to the City, shall bear all
required certificates, acknowledgments and signatures of the owner, surveyor, reviewing surveyor and
others as determined by the Planning and Zoning Department. (See 11.02.070.c.)
4. Covenants, Conditions and Regulations (CCR’s) shall be submitted with final plat.
c. Pay Fees.
Persons filing a subdivision plat within the City of Rexburg shall first have paid all fees as
established by resolution of the Council. Such fees may be reviewed and changed by resolution of the
Council at such time as the Council deems necessary.
d. Staff Review.
The City shall transmit a copy of the application to its various departments and other
agencies that have jurisdiction or an interest in the proposed subdivision for their review and
recommendation.
1. If no written reply is received from any of the various departments or interested agencies within
fourteen (14) days from the date of notification, approval of the preliminary plat by such department or
agency will be considered to be granted.
2. The Planning and Zoning Department shall check the Final Plat for conformity to the Preliminary Plat.
Nonconformance.
a) In the event the Final Plat does not substantially conform to the Preliminary
Plat, the subdivider shall be required to resubmit the Final Plat or go back to the Commission for a
new approval of the Preliminary Plat. (See 11.02.030.e.)
e. Development Agreement Review.
The Development Agreement shall be executed prior to the approval
of the final plat.The final plat shall not be signed by the city until the Development Agreement has been
executed.
f. Dedication and Acknowledgement.
Dedication.
1. The plat must contain a statement of dedication of all streets, alleys, drainage ways,
pedestrian ways and other easements for public use by the person holding the title of record and by
persons holding title as vendees under land contract. If lands dedicated are mortgages, the mortgagee
shall sign the plat.
Acknowledgement.
2. Execution of dedication shall be acknowledged and certified by a Notary Public.
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g. County Surveyor Review.
The Final Plat shall be reviewed by the County Surveyor for conformance to
County codes. The County Surveyor signs the plat as the Examining Surveyor.
h. PUD Master Plan Approval.
If a Planned Unit Development (PUD) Master plan has been approved, the
final plat shall be approved by the Zoning Administrator.
i. Council Action.
Upon receipt of the Final Plat and related documents and all other data as required herein,
the Council shall thereafter place the Final Plat on their next available agenda for consideration at a regular
meeting held not less than thirty (30) days after the date of submittal of the completed submission.
Approval.
a. The Council shall consider the Final Plat and any changes from the Preliminary Plat
approved by the Commission. If said plat conforms to the requirements of this Ordinance and the
Idaho Code, the Council shall consider the approval of the Final Plat.
Dedications Accepted.
b. At the time of approval and recording of the final plat, the Council shall
accept the dedications shown thereon and shall, as a condition precedent to the approval of any Final
Plat, require the subdivider either to improve or agree to improve the streets and all other public
improvements by furnishing a surety bond or satisfactory agreement, in accordance with Standard
Drawings and Specifications, the Engineering Plans and as defined in the Development Agreement.
1. To complete the acceptance of any dedication of land, the owner shall furnish to the Council, a
deed conveying such lands to the City.
2. The City will record the deed with the County Recorder.
3. The Council shall make such findings as are consistent with the provisions of this Ordinance and the
Idaho Code. The reasons for such decision shall include:
a) the ordinance and standards used in evaluating the application
b) the reasons for approval or denial and
c) the actions, if any, that the applicant could take to gain approval of the proposal.
j. Time Limitations.
In the event that the development of the Final Plat is made in successive continuous
segments in an orderly and reasonable manner, conforms substantially to the approved Preliminary Plat,
such segments, if submitted with successive intervals of twelve (12) months may be considered for final
plat approval.
11.02.050. Construction Drawings
Prior to recording the Final Plat, the subdivider shall file with the City Engineer construction drawings for all
improvements that are required for that portion of the subdivision included in the Final Plat.
11.02.060. Bonding
Prior to recording the final plat, the sub-divider shall file with the City Clerk a surety bond or other acceptable
guarantee to ensure actual construction of such improvements as submitted and approved.
a.
The improvements, when covered by a surety bond, shall be constructed within two (2) years from the date
of recording of the Final Plat; provided, however, the City may extend the period one (1) year upon
showing of just cause by the subdivider.
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b.
Such surety bond shall be one-hundred-ten percent (110%) of the estimated cost of the improvements as
determined by the City.
c.
Bonding continued in 14.02. 90.c.
11.02.070. Request for Mylar
Once all revisions from staff reviews, the County Surveyor, the Commission and/or Council amendments have been
made to the Final Plat, the City of Rexburg Staff will request the final Mylar be printed. The final Mylar shall show
all revisions.
a.
All plats to be offered for recording shall be on transparent tracing(s) that show all pertinent information
that was approved on the Final Plat.
b.
The Final Plat is to be recorded on clear Mylar silver emulsion with an overall dimension of eighteen (18”)
inches by twenty-seven (27”) inches.
c. Required Certifications.
1. Signatures of the following show approval or completion. Please seek signatures in the order they are
listed.
a) Professional land surveyor – Surveyor shall state on plat that plat is correct, accurate, and
monuments described have been located, installed and described.
b) Examining Land Surveyor (Madison County Surveyor)
c) Sanitary restriction being lifted (Health Department after approval by D.E.Q.)
d) Planning & Zoning Administrator
e) City Engineer
f) City Clerk
g) City Council (Mayor)
h) Treasurers Certification of taxes paid
i) Recordation by County Recorder
11.02.080. File with County Recorder
The Final Plat shall be filed with the County Recorder within six (6) months after approval by the Council,
otherwise such approval shall become null and void unless an extension of time is applied for and granted.
a. Communicate to City.
Recording number is communicated to the City Planning & Zoning office to
finalize the permit.
11.02.090. As-Built Plans
Prior to acceptance by the City of any improvements installed by the subdivider, two (2) sets of prints of the
approved as-built plans and specification shall be certified by the subdivider’s Engineer and filed with the City.
a.
The as-built drawing shall also be submitted in AutoCAD format, and shall show any deviations from the
approved construction drawings.
b.
Within thirty (30) days after completion of improvements and the submission of the “as-built” plans and
specifications, the City shall certify completion and acceptance of construction and shall transmit a copy of
said certification to the subdivider.
c. Bonding Continued.
A copy of certification shall be forwarded to the City Clerk if a surety agreement has
been executed by the subdivider.Thereafter, if a surety agreement has been executed by the subdivider, the
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City Clerk shall thereafter release seventy-five (75%) percent of said surety or guarantee upon application
of subdivider. The final twenty-five (25%) percent of the surety will remain in effect for a twelve (12)
month warrantee period. If no problems are outstanding at the end of the warrantee period, the City Clerk
will release the final amount upon written request by the developer.
11.02.100. Short Plat
The process for a Short Plat will be the same as for a Preliminary and a Final Plat as listed in this Chapter with the
exception of Commission action and Council action. City of Rexburg Staff will take the place of both the Planning
and Zoning Commission and the City Council.
a. Conditions.
A Short Plat may be requested when all of the following conditions are met:
1. The proposed subdivision does not exceed five (5) buildable lots.
2. No right-of-way dedication is necessary as required by City Codes and Ordinances unless otherwise
approved by the City Engineer.
3. Public improvements, street widening or infrastructure improvements have been approved by the City
Engineer.
4. No impacts on the health, safety or general welfare of the City of Rexburg.
5. The subdivision is in the best interest of the City of Rexburg.
b. Administratively Reviewed by Staff
. The Zoning Administrator shall review said plans and data as
submitted and within ten (10) working days shall advise the sub-divider in writing as to conformance or
nonconformance of this Ordinance. Such review may include comments on policies and guidelines
followed by the Zoning Administrator in the implementation of the Development Code.
SECTION 3 DATA REQUIREMENTS
A. PRELIMINARY PLAT DATA
11.03.010. Preliminary Plat Form of Presentation
a. Form of Presentation.
The following information is required as part of the Preliminary Plat submitted and
shall be shown graphically or by note on plans, or by letter, and may comprise several sheets.
b. Scale.
All mapped data for the same plat shall be drawn at the same standard engineering scale, having no
.
more than one-hundred (100’) feet to an inchWhenever practical, scales shall be adjusted to produce an
overall drawing measuring twenty-four inches by thirty-six (24”x 36”) inches.
c. Format.
All work shall be AutoCAD format and a digital copy shall also be submitted.
d. Identification Data
Name and Location.
1. Proposed name of subdivision and its location by section, township, and range;
reference by dimension and bearing to at least two (2) section corners or quarter section corners and
the basis of bearing.
Subdivider.
2. Name, address, and phone number of sub-divider.
Engineer or Land Surveyor.
3. Name, address and phone number of engineer or land surveyor.
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4. Scale, north arrow and date of preparation including dates of any subsequent revisions.
Vicinity Map.
5. Vicinity Map drawn to scale of 1” equal 800’, clearly showing proposed subdivision’s
configuration in relationship to adjacent subdivisions, main arterial routes, collector streets, etc.
11.03.020 Existing Conditions Data
a. Topography.
Topography by contours or other method approved by the City Engineer and shown on the
same map as the proposed subdivision layout. Contour intervals shall be such as to adequately reflect the
character and drainage of the land. In most cases, the contour interval will be two (2’) feet.
b. Water features and Wetlands.
Location and extent of all water features and known areas of wetlands and
the direction of their flow.
c. Streets, Public Areas, and Permanent Structures.
Location, widths and names of all platted streets,
railroads, utility right-of-way of public record, easements, public areas, permanent structures to remain
including water wells and municipal corporation lines within or adjacent to tract.
d. Adjacent Subdivisions or Surveys.
Name and filing number of any recorded adjacent subdivision or
record of survey having common boundary with the tract.
e. Zone.
By note, the existing zoning classification of tract.
f. Acreage.
By note, the approximate acreage of the tract.
g. Boundaries.
Boundaries of the tract to be subdivided shall show approximate dimensions.
11.03.030 Proposed Conditions Data
a. Development Master Plan
. If the proposed subdivision is part of a larger area intended for development,
a Development Master Plan of the entire area is required.
b. Lots
. Typical lot dimensions to scale, dimensions of all corner lots and curvilinear sections of streets, each
lot’s number individually and the total number of lots.
c. Easements
. Location, width and use of easements.
d. Public Use
. Designation of all land to be dedicated or reserved for public use with use indicated.
e. Zoning Classifications
. If plat includes land for which multi-family, commercial, or industrial use, such
areas shall be clearly designated together with existing zoning classification and status of zoning changes,
if any.
f. Special Features.
Appropriate information that sufficiently details the proposed development within any
special development area, such as hillside, Planned Unit Development, flood plain, cemetery, mobile home
park, large scale development, hazardous and unique areas of development.
11.03.040 Proposed Utility Methods – Public Works
a. Water
. Plans for proper and adequate provisions including type, extent, location and capacity of facilities
shall be made for disposal of wastewater, water, supply and storm water.
Engineered Plans.
1. These plans must be done by an Idaho-registered Engineer, be approved for
individual subdivisions by the City Engineer, must comply with the adopted Design Standards and
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Specifications of the City and must be approved by the Departments of Environmental Quality
(D.E.Q.) at District 7 Health.
Will Serve Letter.
2. The City will provide a “Will Serve Letter” for the developer after the plans have
been reviewed and approved by the City Engineer.
b. Water Supply Systems
. Proper and adequate provision shall be made for culinary water service to each
lot. It shall be the responsibility of the subdivider to furnish such evidence as may be required relative to
the design, operation, volume, and quality of water supply and facilities proposed including pipe size, pipe
materials, location, valve location, hydrant location and any special requirements.
c. Wastewater Management
. It shall be the responsibility of the sub-divider to furnish such evidence as
may be required relative to the design and operation of the sanitary sewage facilities proposed including
pipe size, manhole location, pipe slope and information on any required pump stations.
d. Storm Water Management
. It shall be the responsibility of the subdivider to furnish the City such
evidence as may be required relative to design and operation of any storm water system proposed and how
storm water will be disposed of with supporting calculations.
e. Irrigation Management.
The subdivider shall indicate how site landscaping irrigation will be managed
and provided.
f. Water Rights and Shares
. All water rights or shares that have been historically linked to the development
property shall be used for site irrigation or surrendered to the City.
g. Fire Hydrants.
Fire protection shall be included in the design of the project to meet the requirements of
the City Engineering Standards and International Fire Code.
h.
Required items b, c & d aboveshall consider and include Health Department and Soil Conservation Service
data and requirements, which the sub-divider has accumulated to submit with the Preliminary Plat. Utility
plans shall be made in accordance with standard plans and specifications.
i. Streets.
The subdivider shall show road widths, typical sections and pavement structure. Street layout,
including classification, location, width and proposed names of public streets, alleys, pedestrian ways and
easements; connections to adjoining platted tracts shall also be shown.
j. Traffic Study.
A traffic study may be required by the City Engineer for any development that has a
potential to significantly impact traffic flow.
k. Landscape Plans.
Detailed landscaping plans showing the type and size of all plant material and its
location; the irrigation system, decorative materials, recreation equipment and special effects; and the
schedule for removal and replanting of vegetation.
l.Water & Street Plans.
Detailed water, sewer, drainage and drainage pre-treatment, storm water detention
and street system plans, including:
1. Central line profiles showing finished grades of all streets;
2. Cross sections of proposed streets showing widths of roadway, curbs, locations and width of sidewalks
and location and size of utility mains;
3. Profiles of sanitary sewer, street drainage, drainage pre-treatment, storm water detention and water
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distribution systems, showing pipe size and location of valves and fire hydrants, all to conform to city
and state standards;
4. The estimated cost of street, sewer, drainage and drainage pre-treatment, storm water detention, water,
and other public infrastructure improvements within the Preliminary Plat.
B. FINAL PLAT DATA
11.03.050 Final Plat Form of Presentation
a. Form of Presentation
Scale.
1. The plat shall be drawn to an accurate scale having not more than one-hundred (100’) feet to
(1”) inch unless otherwise approved as to scale.
b. Identification Data
Title.
1. A title which includes the name of the subdivision and its location by number of section,
township, range and county.
Land Surveyor.
2. Name, address and official seal of the registered professional land surveyor
preparing the plat.
3. Scale, north arrow and dateof the plat preparation
c. Survey Data
Dimensions.
1. All dimensions shall be expressed in feet and decimals.
a) All required data to accurately calculate any curvilinear dimensions shown on the plat.
Boundary.
2. Boundaries of the tract to be subdivided fully balanced and closed, showing all bearings
and distances determined by an accurate survey in the field.
a) All boundary corners are also to show state plane coordinates.
b) Bearing and distance ties to two (2) sections or section corners and a description of the corners.
Show basis of bearing.
Excepted Parcels.
c) Any excepted parcel(s) within the plat boundaries shall show all bearings and
distances, determined by an accurate survey in the field.
Cardinal Point.
d) Location and description of cardinal point to which all dimensions, angles,
bearings and similar data on the plat shall be referenced.
Legal Description.
3. A legal description of the exterior boundary of the subdivision.
Survey Markers.
4. (See 11.04.030)
d. Descriptive Data
Streets and Right-of-Way.
1. Name, right-of-way lines, courses, lengths, widths of all public street,
alleys, pedestrian ways and utility easements; radii, points of tendency, central angles of all curvilinear
street and alleys and radii of all street line intersections.
Drainage.
2. All drainage ways to be dedicated to the public.
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Easements.
3. All easements for rights-of-way provided for public services or utilities and any
limitations of the easements.
Lots & Blocks.
4. All lots and blocks shall be numbered throughout the plat in accordance with Idaho
Code.
5. “Exception”, “tracts”, and “private parks”, shall be so designated, lettered, or named and clearly
dimensioned.
Dedications to Public.
6. Location, dimensions, bearings, radii, arcs and central angles of all sites to be
dedicated to the public will be clearly indicated and intended use specified.
SECTION 4: GRID COMPLIANCE
11.04.010 Blocks
a.
Block lengths shall not exceed seven-hundred (700’) feet as measured along the street centerline
intersection to centerline intersection.
b.
Block design shall provide for two (2) tiers of lots except under special conditions where this is not feasible
or practical.
11.04.020 Lots
a. Zoning Compliance.
The lot size, width, depth, shape and orientation, and minimum setback lines shall
comply with the requirements of this Ordinance.
b. Side Lot Lines.
Side lots lines shall be substantially at right angles or radial to street lines, except where
other treatment may be justified.
c. Double frontage lots.
Double frontage lots shall not be allowed except when approved by the
Commission.
11.04.030 Survey Markers
Monuments shall be installed in accordance with current State of Idaho standards at all corners, angle points of
curve and all intersections. The location of these monuments must be approved by the City Engineer prior to
installation.
a. Property Corners.
Each external property corner is to be marked with a 5/8” diameter steel rod thirty
(30") inches long. All interior property corners are to be marked with a ½” diameter steel rod thirty (30”)
inches long. All corners are to be marked with a plastic or aluminum cap that bears the surveyor’s name or
initials and registration number. All marked corners are to be protected with a metal post that extends at
least twenty-four (24”) inches above the ground surface or as determined by the City Engineer.
b. Street Monuments.
For street monuments at all major street intersections, the surveyor shall set a two (2”)
inch diameter brass cap in concrete showing the surveyor’s number, subdivision name and be punched to
show the point of control.
c. Control Monuments.
Control monument locations are to be marked.
11.04.040 Street Names
Street names shall not duplicate any existing street name within Madison County except where a new street is a
continuation of an existing street; street names that may be spelled differently but sound the same as existing streets
shall not be used. All new streets shall generally be named as follows:
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a. North-South
. Streets that have a predominantly north-south direction shall be named “Avenue” or “Road”.
b. East-West.
Streets that have a predominantly east-west direction shall be named “Street or “Highway”.
c. Meandering.
Meandering streets shall be named “Driveway”, “Lane”, “Path”, or “Trail”.
d. Cul-de-sacs.
Cul-de-sacs shall be named “Circle”, “Court”, “Way”, “Place”.
11.04.050 Addressing
(See 3.02.140).
Postal delivery system shall be planned within the existing Postal Service Guidelines for extension of delivery.
SECTION 5: REQUIRED IMPROVEMENTS
11.05.010 Responsibility of Sub-Divider
All required improvements such as streets, seal coating, alleys, utilities, street lighting, drainage, easements and
other facilities, which are required as a condition to plat approval, shall be the responsibility of the subdivider and
shall meet the City Engineering Standards. Plans for the improvements herein required shall be prepared by a
registered engineer in the State of Idaho.
11.05.020 List of Required Improvements
The following will need to be in compliance with the adopted City Engineering Standards. The following
improvements shall also be approved for individual subdivisions by the City Engineer.
a.
Pedestrian ways
b.
Public Sites, Open Spaces, and Natural Features
c.
Water Systems
d.
Fire Hydrants
e.
Wastewater Systems
f.
Storm Water Disposal
g.
Monuments
h.
Curb, gutter, and street improvements
i.
Street signage
j.
Street lighting (See 3.06.080.b.)
11.05.030 Pedestrian Ways
a. Curb and Gutter.
Curb and gutter per current City Engineering Standards.
b. Location.
Concrete sidewalks shall be provided on both sides of dedicated streets.
c. Setback.
All sidewalks are to be set back from the curb per current City Engineering Standards and the
area between the sidewalk and curb and gutter is to be landscaped.
d. ADA.
Sidewalks shall connect to crosswalks at each intersection and shall meet the requirement as defined
for ADA accessibility.
e. Larger widths.
Pedestrian ways with right-of-way widths of ten (10’) feet or greater may be required
where essential for circulation or access to schools, playgrounds, shopping centers, transportation and other
community facilities.
f. Connectivity.
Connectivity to main routes in town for bicycle and pedestrian connections to main routes
shall be included in the design of developments.
11.05.040 Public Sites, Open Spaces, and Natural Features
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a.Future acquisition.
Where it is determined that a proposed park, playground, school or other public use as
shown on a future acquisition map, as authorized in Idaho Code, is located in whole or in part within a
proposed subdivision, the Commission shall notify the appropriate public agency concerning the land
proposed to be acquired.
Suspend Consideration.
1. Within thirty (30) days of the date of notice, the public agency may request
the governing body to suspend consideration on the proposed subdivision for sixty (60) days.
No agreement.
2. If an agreement is not reached within (60) days, the Commission shall resume
consideration of the subdivision.
b. Large Subdivisions.
Subdivisions of more than one-hundred (100) units shall be required to provide at
least ten (10%) percent of the land for public use at fair market rates at the time of development.
c. Existing Natural Features.
Existing natural features which add value to residential development and
enhance the attractiveness of the community such as streets, watercourses, historic spots, and similar
irreplaceable assets shall be preserved, insofar as possible, in the design of the subdivision.
11.05.050 Water & Wastewater (Sewer)
a. Approval Process.
1. Engineer Designed.
All system designs are to be completed by an Idaho-registered Engineer.
2. Design and Installation.
All water system and sewer system design and installation is to be done in
accordance to the requirements of the Idaho Department of Environmental Quality (D.E.Q.) and
adopted City Engineering Standards.
3. Improvements.
All water system improvements are to be approved by D.E.Q. prior to any
construction.
a) The subdivider is responsible for submitting the design to D.E.Q. for approval.
Approval Letter.
b) A copy of the approval letter from D.E.Q. for the final design shall be
submitted to the City Engineer by the subdivider.
“Will Serve Letter.”
c) The City will provide a “Will Serve Letter” to the developer after the plans
have been reviewed and approved by the City Engineer.
Fire Safety
d) . Fire protection shall be included in the design of the project to meet the requirements
of the city and this ordinance. All fire safety must comply with Section 3.02.190 and the
International Fire Code requirements.
Fire Hydrants.
1) The location of fire hydrants required to serve the subdivision shall be
approved by the City and meet the requirements of this Section.
b. Culinary Water Service.
Proper and adequate provisions shall be made for culinary water service to each
lot.
Location.
1. Water lines are to be located at approximately the center of new residential lots.
Commercial Developments.
2. The location and size of service lines for commercial developments are
to be approved by the City Engineer.
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c.Wastewater Disposal.
Proper and adequate provisions shall be made for wastewater disposal.
11.05.060 Storm Water
Proper and adequate provision shall be made for disposal of storm waters. The type, extent, location and capacity of
facilities shall be approved for individual subdivisions by the City Engineer.
a. On-Site Detention.
On-site detention will be required in most locations. In areas where it is not feasible
to connect to or extend existing piped storm water systems to new development, all storm water is to be
retained and disposed of on-site.
b. Idaho Engineer.
All storm water design is to be done by an Idaho-registered Engineer.
a. Drainage Study.
On developments over 2.5 acres, a drainage study must be completed by an Idaho-
registered Engineer to determine storm water run-off volumes, transport times and system design.
c. Design & Installation.
Design and installation is to be done in accordance with the requirements of the
City Engineering Standards.
11.05.080 Utility Locations
a. Communication Facilities.
Communication facilities such as telephone, fiber, internet, etc. are to be
installed in the landscaping strip on each side of the proposed streets.
b. Gas
. Gas mains are to be located per current City Engineering Standards.
1. Exceptions – If the nearest utility is more than eight (8’) feet deep and is constructed with trench walls
sloped 1:1, the gas main must have a minimum of ten (10’) feet horizontal clearance and must not be
less than four (4’) feet horizontal distance from the back of the curb and gutter.
c. Storm Drain System
. Piped storm drain systems for city streets are to be installed within the right-of-way
and within the paved portion of the street section unless otherwise approved by the City Engineer. If local-
non-piped-storm-water-management systems are used, the infiltrators are to be installed in the planting
strip or as determined by the City Engineer. On-site storm retention for the parcel may not use the right-of-
way for storage or conveyance to another portion of the parcel.
d. Underground Electrical.
All new and/or relocated electric lines are to beplaced underground per current
City Engineering Standards.
1. If no sidewalk is to be installed, a level area of five (5) square feet, a minimum of fifteen (15’) feet
from the edge of the asphalt roadway is to be provided for the installation of the power lines in the
utility easement.
2. Exceptions – On major and minor arterial streets, a ten (10’) feet wide easement must be provided
adjacent to and outside of the right-of-way and the underground power lines will be installed in this
easement.
e. Wastewater.
Wastewater pipelines are to be located per current City Engineering Standards. Exceptions
with approval of the City Engineer.
f. Water.
Water pipelines are to be located per current City Engineering Standards.
Hydrants.
1. A minimum ten (10’) feet by ten (10’) feet level area will be required for all hydrants.
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11.05.090. Street Identification
a. New Streets.
1. All new streets constructed shall conform to existing and planned streets, in topographical conditions,
arrangement, character, extent, width, grade, location for public convenience and safety in relation to
the proposed uses of the land to be served by such streets.
Transportation Master Planning.
2. New streets are to be developed to conform to any adopted
transportation system master planning.
b. Cul–De-Sacs.
The City Engineering Department shall approve all cul-de-sac streets.
1. No cul-de-sacs shall be longer than six-hundred (600’) feet.
2. The cul-de-sac shall terminate with a turnaround area with a minimum back of curb radius of forty-five
(45’) feet and a right-of-way radius of fifty-seven (57’) feet.
c. Dead-End Streets
. Dead End Streets are intended for future extensions in development of adjacent lands.
1. A dead-end street serving more than four (4) residential lots shall provide, by easement, a temporary
turning circle with a forty-five (45’) foot radius or other acceptable design to accomplish adequate
access. The turn-around is to be graveled and graded for vehicular use.
d. Frontage Streets.
Frontage Streets are intended where a subdivision abuts or contains an existing or
proposed arterial street, railroad or limited access highway.
1. Because of the need to control the number of accesses to these roads, the developer may be required to
back lots onto the road or to provide a parallel access road.
e. Half - Streets
. Half Streets are not allowed.
Exceptions:
1. The Council may accept a partial street dedication when such street forms the boundary
of the proposed subdivision and is deemed to be necessary for the orderly development of the
neighborhood, and provided the Council finds it will be appropriate to require the dedication of the
remainder of the right-of-way when the adjoining property is developed.
a) When a half-street exists adjoining a proposed subdivision, the remainder of the right-of-way shall
be dedicated.
b) Where a half-street dedication is constructed, they shall be of a width to be fully functional as a
city access street. The minimum acceptable pavement width is twenty-six (26’) feet or as required
by the City Engineer.
f. Local Residential Streets.
Local Residential Streets shall be designed to discourage through traffic use.
g. Loop Street.
Loop streets shall be limited to a maximum length of twelve hundred (1200’) feet measured
along the centerline of a street from centerline section to centerline section or upon approval of the City
Engineer.
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11.05.100. Street Standards
All streets shall have curbs and gutters, sidewalks and asphalt paving per City Engineering Standards. In rural
residential zones, the requirement for curb and gutter may be eliminated with approval of the City Engineer and in
compliance with the approved typical roadway sections.
a. Intersections and Alignments
Prohibited Streets.
1. Streets with centerline offsets of less than one hundred twenty-five (125’) feet are
prohibited without City Engineer prior approval.
Avoid These Intersections.
2. Street intersections with more than four (4) legs and Y-type intersections
where legs meet at acute angles shall be avoided.
Right Angles.
3. Streets shall be planned to intersect as nearly as possible at right angles, but in no event
at less than seventy (70°) degrees. A street intersecting an arterial street shall do so at less than eight-
five (85°) degrees.
Connecting Curve.
4. Where any street deflects at an angle of five (5°) degrees or more, a connecting
curve shall be required having a minimum centerline radius of three hundred (300’) feet for arterial and
collector streets and one hundred twenty-five (125’) feet for local streets.
Between Reverse Curves.
5. A tangent at least one hundred fifty (150’) to two hundred (200’) feet long
shall be provided between reverse curves on arterial and collector streets.
b.Sealcoating.
The developer is required to have all streets or roads seal coated as per city standards within
two (2) years of acceptance.
Bond or Security.
1.The developer shall file with the city a bond or other acceptable security to provide
payment of the sealcoating.
City Sealcoating Project.
2.Arrangements may be made to have the sealcoating incorporated within a
city sealcoating project if coordination and payment arrangements are made with the City Engineering
Department prior to bidding the sealcoating project.
c. Paving.
Paving must comply withapproved, city-typical, street sections.
1. Alternate paving sections will be considered if substantiated by an in-depth, engineering analysis by an
Idaho professional Engineer.
d.Right-of-way & Number of Moving Lanes.
For right-of-way width and number of moving lanes, see
current Engineering Standards, as specified by IDAPA 39.03.42.
e. Intersection Frequency.
Intersections shall be limited to as few points as possible.
f. Street signs and Traffic Control Signals.
Street name signs and traffic control signs shall be installed by
the City in appropriate locations at each intersection in accordance with local standards.
1. A fee shall be charged to the subdivider to reimburse the City for its cost of such signing.
g. Lighting
(See Section 3.6.) Street lights shall be installed by the subdivider at intersections throughout the
subdivision, unless waived after recommendation of the City Engineer and approval of the City Council.
1. Street lights will be required to be installed per City Engineering Standards.
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Drawings.
2. Record drawings are to be submitted to the City Engineer prior to the governing utility
connecting the street lights to power.
Street Light Wiring.
3. All street-light wiring installed in the City of Rexburg right-of-way shall be
installed in electrical conduit according to the currently adopted National Electrical Code for direct
burial.
Owned by City of Rexburg.
a) This standard shall only apply to wiring that is owned by or
proposed to be owned by the City of Rexburg, including but not limited to the wiring after the first
point of disconnect, typically an over-current, protection device.
Fusing, Junction Boxes, etc.
b) Fusing, junction boxes and related work shall be done to comply
with the requirements of the City of Rexburg and the governing utility.
No Foreign Systems.
c) No other foreign systems such as water piping or irrigation shall be in the
same conduit as power wiring.
New Conduit.
d) All new conduits installed shall also be located by a City official prior to
backfilling any trenching.
Poles.
e) Any pole installed shall have a grounding electrode installed at each point-of-disconnect
location in addition to an equipment grounding conductor of sufficient size to meet code.
Size.
f) Sizes of conduit shall also be no less than one (1”) inch to each pole light, unless larger
required by current National Electrical Code. No less than two (2”) inch size to feed more than
fifty (50’) feet between poles or junction boxes.
11.05.110. Street Intersections and Alignments
a. MAJOR ARTERIAL
Permits rapid and relatively unimpeded traffic movement throughout the city to carry high volumes of inter and
intra traffic which connects the major land use elements, as well as, communities with one another. The major
function is to serve through-traffic and the secondary function is to serve abutting property.
Major Arterial streets are shown on the approved Transportation Plan.
*
ALIGNMENT GRADES
Horizontal: 700’ minimum radius at centerline,
0.3%-0.6%
930’ preferred
Vertical: Minimum length =
*0.7% may be considered for unique, short distances.
K * (algebraic difference in rate of grade)
INTERSECTIONSPLANNING
1. Should be spaced approximately one (1) mile apart in
1. Intersections will be “T” type at grade design suburban areas and a few blocks apart in areas of high-
unless prior approval is obtained from the City population density and intense land usage.
Engineer. 2. Should not bisect neighborhoods but act as boundaries
2. Intersections shall be no less than specified by between them.
Abutting Properties.
IDAPA 39.03.42. 3. Abutting properties shall not
Median Cuts.
3. Median cuts will not normally be face on the roadway unless separated from it by a
permitted except at major or significant street frontage road.
Bicycle.
intersections as approved by City Engineer. 4. On-street bicycle travel is not allowed unless
no alternative routes are available.
Curbs, gutter and sidewalks required per current City
CURB, GUTTER, SIDEWALK
Engineering Standards.
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PARKINGOn-street parking prohibited.
Determined by a full soils investigation, traffic study and a
PAVING pavement design completed by an Engineer licensed in
state of Idaho and approved by City Engineer.
TRAFFIC CONTROL Traffic control devices and channelization
b. MINOR ARTERIAL
Permits rapid and relatively unimpeded traffic movement throughout the City and carries high volumes of inter and
intra traffic, which connects the major land use elements.
ALIGNMENT GRADES
0.3% - 0.6%
Horizontal: 700’ minimum radius at centerline
Vertical: Minimum length =
*0.7% may be considered for unique, short distances;
K * (algebraic difference in rate of grade)
Flatter slopes may be approved.
ACCESSPLANNING
1. Spaced approximately one (1) mile apart in the
1. Intersections will be “T” type at grade design suburban areas of the City to a few blocks in areas of
unless prior approval is obtained from the City high-population density and intense land usage.
Engineer. 2. Should not bisect neighborhoods.
Bicycle.
3. Utilitarian bicycle travel can be
2. Intersection and curb cuts shall be limited. accommodated with fourteen (14’) travel lanes on
designated streets.
Curbs, gutter and sidewalk required as per City
CURB, GUTTER, SIDEWALK
Engineering Standards.
PARKINGOn-street parking prohibited.
TRAFFIC CONTROL Traffic control devices and channelization
c. RESIDENTIAL COLLECTOR
Designed to serve the local needs of the neighborhood and provide direct access to abutting properties. All should
have an origin or a destination within the neighborhood.
ALIGNMENT GRADES
Horizontal: 300’ - 450’ radius at centerline
0.3% - 0.7%
Vertical: Minimum length =
K * (algebraic difference in rate of grade)
ACCESSPLANNING
1. Direct access to residential properties by way of
1. Should be designed to discourage through
curb cuts
neighborhood traffic.
2. Curvilinear and loop streets are desirable
2. Intersections are at grade.
Bicycle.
3. Bike travel can be accommodated with 14’
outside travel lanes.
CURB, GUTTER, SIDEWALK Sidewalks will be detached from a standard approved curb
and gutter section, with location and width according to
current City Engineering Standards.
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PARKING
On-street parking allowed on both sides of the street unless
otherwise directed by the City Engineer.
d. RESIDENTIAL STREET
Designed to serve the local needs of the neighborhood and provide direct access to abutting residential properties.
All traffic should have an origin or destination within the neighborhood.
ALIGNMENT GRADES
Horizontal: 200’ radius at centerline
Vertical: Minimum length = 0.3% - 0.7%
K * (algebraic difference in rate of grade)
ACCESSPLANNING
1. Intersections are at grade. 1. Designed to minimize through traffic.
2. Direct access to abutting properties by way of 2. Curvilinear and loop streets are desirable.
curb cuts or drive-overs (ramp-type) curbing is 3. In subdivision design, streets are discouraged from
allowed. intersections with major and secondary arterial streets.
Sidewalks will be detached and separated by a planter strip
CURB, GUTTER, SIDEWALK
in compliance with current City Engineering Standards.
PARKING On-street parking allowed on both sides of the street
e. RURAL RESIDENTIAL
Provide direct access to abutting single-family residential properties or cul-de-sacs having a length of no greater
than six-hundred (600’) feet.
ALIGNMENT GRADES
Horizontal: 150’ minimum radius at centerline 0.4% - 0.7%
Vertical: Minimum length = *Grading plans are required to be approved by City
K * (algebraic difference in rate of grade) Engineering Department.
ACCESSPLANNING
1. Intersections are at grade. 1. Designed as a short loop or cul-de-sac street only.
2. Direct access to residential properties is 2. Should not intersect major arterial streets
allowed.
CURB, GUTTER, SIDEWALK See current City Engineering Standards. Sidewalks should
be detached.
PARKING On-street parking may or may not be allowed on either side
of the street.
PAVING A pavement width of thirty-four (34’) feet is allowed on
minor rural residential streets which contain no more than
fifty (50) single-family lots. (See current City Engineering
Standards.)
STORMWATER Storm water management is to be designed to maintain the
drainage upon each lot.
f. INDUSTRIAL/COMMERCIAL STREET
Designed to serve facilities within industrial commercial areas and to connect such areas with major arterial and
collector streets.
ALIGNMENT GRADES
Horizontal: 300’ radius at centerline
0.3% - 0.6%
Vertical: Minimum length =
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K * (algebraic difference in rate of grade)
ACCESSPLANNING
1. Direct access to abutting commercial properties
Only local industrial commercial traffic should be
by way of curb cuts.
encouraged.
2. Intersections are at grade (0.5% minimum).
CURB, GUTTER, SIDEWALK Sidewalks will be detached from the curb where required.
On-street parking may be permitted on both sides of the
PARKING
street.
g. PRIVATE STREET
Serve facilities within industrial commercial areas and connect such areas with major arterial and collector streets.
ALIGNMENT GRADES
Horizontal: 300’ radius at centerline
0.3% - 0.6%
Vertical: Minimum length =
K * (algebraic difference in rate of grade)
ACCESSPLANNING
1. Direct access to abutting commercial properties Only local industrial commercial traffic should be
by way of curb cuts. encouraged.
2. Intersections are at grade (0.5% minimum).
1. Sidewalks will be detached from the curb where
required.
CURB, GUTTER, SIDEWALK
2. Construction of sidewalks or pedestrian pathways is
required to adequately provide for safe access.
All private streets are required to be paved.
Streets serving commercial or residential subdivisions are to
PAVING be paved to a minimum pavement width of twenty-six (26’)
feet if on-street parking permitted and thirty-nine (39’) feet
if on-street parking is not allowed.
PARKING On-street parking may be permitted or not.
Adequate site drainage must be developed on-site and no
STORMWATER storm water will be allowed to discharge onto a public
right-of-way.
11.05.120. Traffic Studies
Traffic studies may be required to adequately assess the impact of a proposed development on the existing and/or
planned transportation system.
a. Triggers.
1. For nonresidential development proposals when trip generation during the peak hour is expected to
exceed one hundred (100) vehicles.
2. Residential development with one hundred (100) or more dwelling units.
Annexation.
3. For an application for annexation into the City.
Density.
4. A new traffic study will be required, if after submitting the original traffic study, the land use
density increases by more than fifteen (15%) percent.
Master Plan or Development Plan Submittal
5.
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Preliminary or Final Plat.
6. For a Preliminary or Final Plat if the property has already been rezoned
for the proposed use and no traffic study was required for the rezoning, or the original traffic study is
more than two (2) years old.
Pre-Application Conference.
7.
Sufficient Information.
a) If the City Engineer is provided sufficient information to determine
whether the trip generation/dwelling unit criteria has been met, the applicant will be notified a
traffic study will be required.
Insufficient Information.
b) If insufficient information is available, but the property appears to
involve a sufficiently intense land use, the applicant will be informed that a traffic study may be
required.
Prior to building permit.
8. Before a building permit, if the property has already been zoned/platted and
no previous traffic study less than two (2) years old exists.
State Highway Access.
9. For any change of use affecting State Highway Access including new site
access or additional access for an existing use is being requested prior to issue of a building permit.
b. Process.
1. Responsibility of the applicant.
License & Experience.
2. Traffic study must be prepared by a professional, Transportation Engineer
licensed in the State of Idaho with adequate experience in transportation planning.
City Engineer Review.
3. All studies must be reviewed by the City Engineer before acceptance.
c. Prior to Starting Traffic Study.
Professional Transportation Engineers are encouraged to discuss projects
with the City Engineer prior to starting the study. This should provide a firm base of cooperation and
communication between the City, the owner or developer and his consultant in creating traffic
characteristics that are in the best interest of the total community.
d. Format.
All traffic studies shall contain, as a minimum, the following information:
Trip Generation Table.
1. A summary table listing each type of land use, the units involved, the general
rates used and the resultant trip generation (total traffic and AM/PM peaks).
Site Plan and Vicinity Map.
2. A site plan that shows the locations of each proposed land use, and a
vicinity map that shows the site in relation to the surrounding transportation system.
Existing and Projected Traffic Volume Graphics should show:
3.
a) A.M. peak hours site traffic (in and out) including turning movements
b) P.M. peak hours site traffic (in and out) including turning movements
c) A.M. peak hour total (in and out) including turning movements for current conditions and 20-year
projections or build out.
d) P.M. peak hour total traffic (in and out) including turning movements for current conditions and
20-year build out.
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Total Daily Traffic Counts.
4. All total daily traffic counts should be actual machine counts and not
based on factored peak hour sampling.
Possible Use of ITD Counts.
5. Latest available machine count from the Idaho Transportation
Department (ITD) and other agencies may be acceptable if taken within a reasonable time period.
Accepted Traffic Patterns.
6. All traffic shall be assigned to existing and planned facilities in a manner
consistent to the accepted traffic patterns and approved by the City Engineer.
e. Critical Lane Capacity Analysis.
A critical lane capacity analysis should be conducted for all major
driveways that intersect local, collector, or arterial streets, and all adjacent local, collector, and arterial
intersections.
1. Both a.m. and p.m. peak hours should be tested to determine the critical movements unless the
proposed land use generates significantly greater traffic volumes in either peak hour or at midday.
2. Pedestrian movements should also be considered in the evaluation.
th
3. Capacity calculations should also include an analysis for 20 year projections or build-out conditions.
4. The appropriate forms for capacity analysis calculations shall be used.
b. Design Hours Volumes.
Site design hour volumes approximating the peak hour volumes used to
determine public improvements will be estimated using one of the following:
1. Existing traffic volume counts
2. Peak hour trip generation rates as published in the ITE Trip Generation Summary
3. A professionally recognized and accepted study for uses of development and generation rates.
c. Level of Service
. Level of service C shall be the design objective and under no circumstances will less
than level of service D be accepted for site and non-site traffic. The design year will be approximately 20
years following construction or build out.
d. Reciprocal Parking.
Traffic studies for planning applications where reciprocal parking is contemplated
will be required to include parking accumulation studies for existing facilities similar to proposed uses.
e. Revisions to traffic study
. Revisions to the traffic study shall be provided as required by the City
Engineer. The need to require revisions shall be based on the completeness of the traffic study with the
proposed access and development plan.
f. Traffic Accidents
. Traffic accident data for affected street corridors may be required for the study. In this
case, estimates of increased or decreased accident potential shall be evaluated for the development.
g. Traffic Counts
. All traffic count data (including hourly ADT and peak hour turning movements) and
analysis worksheets should be provided in the appendices.
h. Trip Assignment.
Non-generated pass-by traffic reductions in generation volume may be considered if
applicable. All estimates of trip distribution, assignment and modal split are subject to review by the City
Engineer.
i. Trip Generation Guide where Appropriate.
In the event that data is not available for the proposed land
use, the City Engineer shall approve estimated rates prior to acceptance.
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j. Trip Generation Rates.
Trip generation shall be calculated from the latest data contained within the
Institute of Transportation Engineers.
m.Traffic Signals.
Traffic progression is of paramount importance.
1. All potential signalized intersections should be planned for 0.5 mile intervals.
2. All other locations to be considered shall meet the following criteria:
a) Submittal of a time space diagram with acceptable through bands, cycle lengths and progression
speeds.
Deviations.
b) In areas that may affect established, complex, computerized progressions, any
deviation shall be thoroughly addressed and approved by the City Engineer.
c) Time for side-street traffic must be sufficient for side-street volumes.
SECTION 6: SPECIAL DEVELOPMENTS
This section identifies types of special developments that normally pose special concerns to the Commission and the
Council. In this section, requirements and design standards shall be taken into consideration when proposing
developments. This provisions of this section are in addition to other applicable requirements of this Ordinance.
11.06.010. Condominium
a. Definition.
A building or complex of buildings containing a number of individually owned apartments or
houses, but the land, buildings and common areas are owned and regulated by a Homeowner’s Association.
b. Yard Requirements.
The City may consider a condominium development as a single building requiring
one (1) front yard, two (2) side yards, a rear yard and other regulations pertinent to a given lot.
c. Platting Requirements.
The subdivider shall provide the Commission with a Preliminary Plat, elevations,
perspective drawings and such other illustrated information at adequate scale to show the proposed
development that will include at least the following:
1. All information required for a subdivision Preliminary Plat
2. Architectural styles and building design concept
3. Architectural materials and color
4. Type of landscaping
5. Screening, if proposed
6. Type of solid waste facilities
7. Parking concept
8. Open space areas
9. Storage areas and enclosures
d. Final Plat.
A Final Plat shall be prepared and approved that meets all other requirements of the
subdivision platting of this ordinance.
e. Control During Development.
Single ownership and control during development shall be required and a
time limit may be imposed to guarantee the development is built and constructed as planned.
f. Home Owners Associations.
Home Owners Association by-laws and other similar deed restrictions,
which provide for the control and maintenance of all common areas, recreation facilities or open space,
shall be approved by the Commission. Any and all power as specified in such agreements may be required
to also be assigned to the jurisdictional agency to insure continued and adequate maintenance of all such
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common areas, recreational facilities and open spaces, to assess properties for delinquencies and to enforce
motor vehicle speeds to the interest of the owners involved and of the general public.
g. Open Space.
The location of open space shall be appropriate to the development and shall be of such
shape and area to be useable and convenient to the residents of the development.
h. Maintenance Building.
A maintenance building or facility shall be provided. The size and location of the
facility is to be determined by the type and service needed for the necessary repair and maintenance of all
common areas and facilities.
i. Storage Areas.
Storage areas may be required for the anticipated needs of boats, campers and trailers. For
a typical residential development, one hundred (100) square feet of space shall be provided for every living
unit. This may be reduced by the Commission if there is a showing that the needs of particular
developments are less.
j. Private Streets.
(See 11.05.100.g.)Private street construction standards shall be based upon requirements
set by the City Engineering Standards. Adequate construction standards may vary on the size of the
development and the demands placed on such improvements. All private streets shall be constructed of
adequate width for fire and sanitation services.
k. Parking Space
1. Parking for the proposed development will be as required by the zone in which the proposed
development is to be constructed.
Guest.
2. One (1) additional parking space beyond that which is required by the zoning ordinance may
be required for every three (3) dwelling units to accommodate visitor parking.
l. Public Improvements
- Unless accepted by the provisions of this ordinance, the Commission and Council
shall require the installation of public improvements and utilities for condominium projects.
m. Council
- The Council may regulate and attach conditions to the design concepts and location of buildings,
the creation, shape and size of condominium units, the provisions and maintenance of open space, off-street
parking and other related provisions as determined.
11.06.020. Subdivision within a Floodplain
Buildings planned within the floodplain or alterations of any kind anticipated with the floodplain area that may alter
the flow of water.
a. Justification
. Subdivider shall demonstrate conclusively that such development will not present a hazard to
life or limb, be hazardous to property, create adverse effects on the safety, use or stability of a public way
or drainage channel, or have an adverse impact on the natural environment. All subdivision proposals shall
be consistent with the need to minimize flood damage.
b. Approval.
1. Approval from the Idaho Department of Water Resources and the Corps of Engineers shall be obtained
prior to any wetland modifications of channel changes.
2. No subdivision or part thereof shall be approved if levees, fills, structures or other features within or
required by the proposed subdivision will individually or collectively increase flood flows, heights or
damages.
3. If only part of a proposed subdivision can be safely developed, development shall be limited to that
part and the City shall require development to proceed consistent with determination.
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c.
Where base flood elevation data has not been provided or is not available from another authoritative source,
it shall be generated for subdivision proposals and other proposed development which contain at least 50
lots or 5 acres (whichever is less).
d. Submittal Requirements
1. Proposed development plan of adequate scale
2. In addition, to subdivision requirements or any proposed subdivision that is fully or partially located
within a floodplain, the subdivider shall provide the Commission with supporting documentation for
the following additional information to show and explain:
a) All drainage ways
b) An Engineering Hydrologic and Hydraulic Report that identifies the Flood Way
c) Any planned rerouting of waterways
d) Areas of frequent or intermediate flooding
e) Elevations or designated flood water
f) If the development plan requires a structure or fill to be placed within the Flood Way, then the
report must identify how the Flood Way and the Floodplain are effected both upstream and
downstream.
g) Means of flood-proofing buildings
h) Means of insuring loans for improvements within the flood plain
i) The location of designated Floodplain
e. Existing Residential Structures
. Residential structures within the floodway shall have the lowest floor
(including basement) elevated at least two (2’) above the level of the one-hundred (100) year flood.
f. New Construction and Non-Residential Structures.
For new construction or substantial improvements
of non-residential structures, the lowest floor (including basement) shall be elevated at least two (2’) above
the one-hundred (100) year flood level or together with attendant utility and sanitary facilities, shall be
flood-proofed up to the one-hundred (100) year flood level.
g. Flood-Proofing
Flood-proofing plans must be individually approved by the Council upon recommendations from the
Commission before such uses are constructed. Flood-proofing may be included but not be limited to the
following:
Drainage.
1. All subdivision proposals shall have adequate drainage provided to reduce exposure to
flood damage.
Control on Drains.
a) Installation of valves or controls on sanitary and storm drains which permit
the drains to be closed to prevent backup of sewage and storm waters into building or structures
Electrical.
2. Location and installation of all electrical equipment, circuits and electrical applications so
that they are protected for inundation by the regulatory flood.
Public Utilities.
3. All subdivision proposals shall have public utilities and facilities such as sewer, gas,
electrical and water systems located and constructed to minimize flood damage.
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Storage.
4. Location of storage facilities for chemicals, explosives, buoyant materials, flammable liquids
or other toxic materials which could be hazardous to public health, safety and welfare at elevations
associated with the regulatory protection elevation.
Walls.
5. Reinforcement of walls to resist anticipated hydraulic loads
Water.
6. Construction of water supply and wastewater systems to prevent the entrance of flood water.
h. Commission Consideration.
In determining the appropriateness of the subdivision for land located within
a floodplain, the Commission shall consider the objectives of this ordinance and at least the following:
Available Locations.
1. Availability of location not subject to flooding for proposed subdivisions and
land uses
Services.
2. Importance of the services provided by the proposed facility to the community
Compatibility.
3. Compatibility of the proposed uses with existing developments and anticipated
developments
Comprehensive Plan.
4. The relationship of the proposed subdivision to the Comprehensive Plan
Flood Plan.
5. Relationship of the proposed subdivision to the flood plan management program for the
area
a) Expected heights, velocity, duration, rate of rise and sediment transport of the flood water
expected at the site
b) Susceptibility of the proposed facility and its contents to flood damage and effect of such damage
on the individual owner
Water Front Requirements.
6. Requirements of the subdivision for a water front location
Services
6.
a) Adequacy of proposed water supply and sanitation systems and the ability of these systems to
prevent disease, contamination and unsanitary conditions under flood conditions
b) Costs of providing governmental services during and after flood conditions including maintenance
and repair of public utilities and facilities such as sewer, gas, electrical and water systems, streets
and bridges.
c) Safety of access to the property for emergency vehicles in time of flood
Danger
7.
a) Danger that intended modifications may cause on downstream properties of to the injury of others
b) Danger to life and property due to the increase flood heights or velocities caused by subdivision
fill, roads and other intended modifications.
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11.06.030. Subdivision for a Cemetery
a. Submittal Requirements
1. The developer shall submit a written statement that has been prepared by an attorney that adequately
assures the compliance of the proposed cemetery with the procedural platting requirements and
management requirement outlined in Title 27, Idaho Code.
Type.
2. The developer shall provide the Commission with written documentation that will sufficiently
explain if the proposed cemetery will be used for either human or animal remains or the functions that
are anticipated on the property.
11.06.040. Areas of Critical Concern
The development of any properties located in a hazardous or unique areas that have previously been designated as
an area of critical concern by the Council, as provided by Idaho Code.
b. Definition
- Such areas of critical concern are designated by the Council, through due process such as
follows:
1. Floodplains
2. Hillside subdivisions
3. Historical significance areas
4. Scenic areas
5. Unique animal and wildlife habitat
6. Unique plant life habitat
7. Unstable soils
8. Other areas of critical concern
c. Submittal Requirements
Idaho Code demands that special consideration be given by the subdivider to assure that the development is
necessary and desirable in the public interest in view of the existing unique conditions.
1. Preliminary Plat application
Environmental Assessment Document
2. The subdivider shall prepare and submit an prepared by a
team of professionals to answer the following questions:
a) What environmental impacts will probably occur as a result of the proposed development?
(Example: wildlife, plant life, social, economic, physical, etc.)
b) What corrective action or alternative plans could be developed, so as not to significantly cause
detrimental environmental impact?
c) What adverse effects of the proposed development cannot be avoided?
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