The standards outlined below shall apply to all subdivision streets proposed for addition to the state highway system (or municipal street system). In cases where a subdivision is sought adjacent to a proposed thoroughfare corridor, the requirements of dedication and reservation discussed in section 9-4-61(b) shall apply.
(a) Design speeds.
Rural | Desirable Minimums |
Major collector roads | 55 |
Local roads including residential collectors and local residential | 35 |
Urban | Desirable Minimums |
Major thoroughfares and other than freeway and expressway | 60 |
Minor thoroughfares | 45 |
Neighborhood streets | 25 |
(Ord. of 4-6-92, No. 190-92)
(b) Cul-de-sacs.
(1) Permanent deadend streets are prohibited except when required by extreme topography, water or other natural features. When permitted, no dead-end street shall be longer than 500 feet or provide access to more than 12lots. Measurement shall be from the point where the center line of the deadend street intersects with the center of a through street to the center of the turnaround of the cul-de-sac.
(2) The distance from the edge of pavement on the vehicular turnaround to the right-of-way line shall not be less than the distance from the edge of pavement to right-of-way line on the street approaching the turnaround.
(3) Cul-de-sacs should not be used to avoid connection with an existing street or to avoid the extension of an important street.
(f) Alleys.
(1) Alleys shall be required to serve lots used for commercial and industrial purposes except that this requirement may be waived where other definite and assured provision is made for service access.
(2) The right-of-way width of an alley shall be 20 feet and the pavement width shall be 12 feet.
(3) Deadend alleys shall be avoided where possible, but if unavoidable, shall be provided with adequate turnaround facilities at the deadend as may be recommended by the Planning Board and approved by the City Council.
(4) Sharp alignment or grade changes shall be avoided.
(Ord. of 4-6-92, No. 190-92; Ord. of 3-6-06, No. 5- 06; Ord. of 11-7-16, No. 10-16)