(A) General street design.
(1) The design of all streets shall be considered in their relation to existing and planned streets, to reasonable circulation of traffic, to topographical conditions, to runoff of storm water and to the proposed uses of the area to be served.
(2) Where new streets extend existing adjoining streets, their projections shall be at the same or greater width, but in no case less than the minimum required width.
(3) Where adjoining areas are not subdivided, the arrangement of streets in new subdivisions shall make provision for the proper projection of streets. When a new subdivision adjoins unsubdivided land susceptible to being subdivided, then the new streets shall be carried to the boundaries of such unsubdivided land.
(B) Street width and grades. The following standards of street design shall be observed by the subdivider.
Street Category | Minimum Width Right-Of-Way | Minimum Width Pavement | Maximum Grade 1 |
Maximum Grade |
Collector | 66 feet | 40 feet | 5% | 0.5% |
Local | 60 feet | 36 feet | 6% | 0.5% |
1 To assure a safe and reasonable sight distance at intersections a lesser or greater maximum grade may be required | ||||
(C) Street jogs. Street jogs with centerline offsets of less than 125 feet shall be avoided.
(D) Street intersections. Insofar as practical, streets shall intersect at right angles and no intersection shall be at an angle of less than 60 degrees. It must be evidenced that safe and efficient traffic flow is encouraged.
(E) Culs-de-sac. Maximum length of permanent cul-de-sac streets shall be 400 feet measured along the centerline from the intersection of origin to end or right-of-way. Each cul-de-sac shall be provided at the closed end with a turnaround having a minimum outside roadway diameter of 80 feet and a minimum street property line diameter of 100 feet.
(F) Half streets. Half streets shall be prohibited except where the City Council finds it to be practicable to require the dedication of the other half when the adjoining property is subdivided.
(G) Street names. Proposed streets obviously in alignment with existing and named streets shall bear the names of such existing streets. In no case shall the name of the proposed street duplicate existing street names, including phonetical similarities.
(H) Private streets. Public improvements shall not be approved for any private street.
(I) Access to arterial streets and highways. Where a proposed plat is adjacent to a major thoroughfare, spacing between access points to such thoroughfare of less than 660 feet shall be avoided except where impractical or impossible due to existing property divisions or topography.
(J) 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 land and providing convenient access to it.
(K) Corners. Curb lines at street intersections shall be rounded at a radius of not less than ten feet.
(L) Alleys. Alleys shall be prohibited in residential areas unless special permission is granted by the City 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 as determined by the city consulting engineer.
(1974 Code, § 10-3-2) (Ord. 518, passed 3-25-1969)