(A) Minimum right-of-way and roadway width. The minimum right-of-way and roadway width of all proposed streets shall be as specified by the general plan, general plan component, or official map, or if no width is specified therein, the minimum widths shall be as specified in division (C) of this section (Table 1). Cross sections for freeways and parkways should be based upon detailed engineering studies.
(B) Cul-de-sacs.
(1) Cul-de-sac streets designed to have 1 end permanently closed shall not exceed 500 feet unless otherwise approved by the Plan Commission. All cul-de-sac streets designed to have 1 end permanently closed shall terminate in a circular turnaround having a minimum right-of-way radius of 50 feet and a minimum outside curb radius of 40 feet.
(2) Street grades shall be established wherever practicable so as to avoid excessive grading, the excessive removal of ground cover and tree growth and general leveling of the topography.
(C) Table 1.
R.O.W. Width in Feet | Min. Pavement Width (FF - C&G) | |
Major Street | Desired: 80' | 44' |
Minimum: 66' | ||
Collector Street | Desired: 66' | 40' |
Minimum: 66' | 36' | |
Minor Street | Desired: 66' | 36' |
Minimum: 60' | ||
Frontage Street | Desired: 60' | 36' |
Minimum: 50' | ||
Cul-de-Sac Street | Minimum: 50' | 36' Street Proper |
50' Radius | ||
(D) Street offsets. Wherever possible, a minimum street offset of 125' shall be required from center line to center line.
(E) Street intersections. Insofar as practical, streets shall intersect at right angles and no intersection shall be at an angle of less than 60. It must be evidenced that safe and efficient traffic flow is encouraged.
(F) Private streets. Public improvements shall not be approved for any private streets.
(G) Access to arterial streets and highways. Where a proposed plat is adjacent to an arterial street, spacing between access points to such thoroughfares of less than 660 feet shall be avoided except where impractical or impossible due to existing property divisions or topography.
(H) Street curvature. When a continuous street centerline deflects at any 1 point by more than 10, a circular curve shall be introduced having a radius of curvature on said centerline of not less than the following:
Arterial streets & highways | 500 ft. |
Collector streets | 300 ft. |
Local streets | 100 ft. |
(I) Hardship to owners of adjoining property. The street arrangements shall not be such as to cause hardship to owners of adjoining property in platting their own and providing convenient access to it.
(J) Corners. Curb lines at street intersections shall be rounded at a radius of not less than 18 feet.
(K) Alleys.
(1) Alleys shall be prohibited in residential areas unless special permission is granted by the Common Council for their provision. Alley intersections and sharp changes in alignment shall be avoided, but where necessary, corners shall be cut off sufficiently to permit safe vehicular movement. Dead-end alleys shall be avoided, but if unavoidable, shall be provided with adequate turn around facilities at the dead-end.
(2) A tangent of at least 100 feet long shall be required between reverse curves on arterial and collector streets.
(L) Maintenance. Streets included in approved subdivisions, except designated state, federal or county roads, shall be maintained by the municipality in which said streets are located unless other written arrangements are made prior to final plat approval.
(Ord. 559, passed 6-8-88) Penalty, see § 1.1.99