The following design requirements shall apply to all developments within the town, unless the development has been platted and the streets dedicated to public use prior to the effective date hereof or unless unusual conditions warrant a variance from such requirements and such variance is approved by the Town Council.
(A) Relationship to topography. Streets shall bear a logical relationship to topography and to the location of existing or platted streets in adjacent property.
(B) Conformance with official plans. Streets, utility rights-of-way, and public open spaces shall conform to the official plans of the town for the extension and location of such public facilities.
(C) Minimum street widths. Minimum street widths shall be as follows:
Classification | Right-of-Way Width | Roadway Width |
Collector with property line walk | 80 feet | 52 feet |
Local street with curb walk | 80 feet | 46 feet |
Local street with property line walk | 60 feet | 46 feet |
Major arterial | 100 feet | 68 feet |
(D) Alleys. Alleys shall be at least 30 feet in width and open at both ends in business districts. Alleys at least 20 feet in width shall ordinarily be required in all residential districts and shall be open at both ends. Where alleys are not required, easements shall be granted or reserved at least ten feet in width on each side of all rear lot lines and along side lot lines where necessary for utility installation and maintenance.
(E) Marginal access streets. Where a development adjoins or contains an existing or proposed major arterial highway or street on which traffic volumes and vehicular speeds warrant special safety features, marginal access streets at least 30 feet in width shall be required.
(F) Minor streets. Minor streets shall approach the major or collector streets at an angle of not less than 80 degrees.
(G) Cul-De-Sacs. Minor terminal streets (cul-de-sacs) shall be not longer than 400 feet to the beginning of the turnaround. Each cul-de-sac must have a 50-foot radius from the property line and a 100-foot diameter from property line to property line. If surface water drainage is into the turnaround, due to the grade of the street, necessary catch basins and drainage easements shall be provided. Where a street is designed to remain only temporarily as a dead end street, an adequate temporary turning area shall be provided at the dead end thereof to remain and be available for public use so long as the dead end condition exists.
(H) Street jogs. Street jogs with centerline offsets of less than 125 feet shall not be allowed.
(I) Continuation of existing streets. When new streets are in alignment with existing streets, the new streets shall be named according to the streets with which they align. Streets which do not fit into an established street naming pattern shall be named in a manner which will not duplicate or be confused with existing names.
(J) Street grades. Street grades shall be more than 0.5% but less than 10% for local and collector streets and alleys and less than 6% for major arterial streets.
(K) Grade approaching intersections. Streets shall be leveled to grade of 4% or less for a distance of at least 100 feet approaching all intersections unless the resulting vertical curve to connect the two street grades shall result in a grade of more than 8% in the connecting grade.
(L) Half streets. Half streets proposed along a subdivision boundary or within any part of a subdivision shall not be approved.
(M) Arrangement of streets. The arrangement of streets in new subdivisions shall make provision for the continuation of the existing streets in adjoining area (or their proper protection where adjoining land is not subdivided) insofar as such may be deemed necessary by the Town Council for public requirements. The street arrangement must be such as to cause no unnecessary hardship to owners of adjoining property when they plat their own land and seek to provide for convenient access to it.
(N) Dedication of streets. Streets in subdivisions shall be dedicated to the town as public streets.
(Prior Code, § 12-5-1)