(A) All subdivision layouts shall be developed in proper relation to existing and proposed streets, roads, topography, surface water, vegetative cover, other natural features, and the most advantageous development of adjoining areas.
(B) Public streets shall be designed and located to take into account:
(1) Existing and planned streets;
(2) Topographic conditions including the bearing capacity and erosion potential of the soil;
(3) Public convenience and safety including facilitating fire protection, snow plowing, and pedestrian traffic;
(4) Requirements of public utility facilities;
(5) The proposed uses of land to be served;
(6) Anticipated traffic volumes; and
(7) Further resubdivision possibilities.
(C) 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.
(D) The following width and grade standards of street design shall be observed by the subdivider:
STREETS
|
DISTANCE*
|
MIN. GRADE
|
MAX. GRADE
|
Highways and arterial streets | 100 to 150 feet | 6% | 0.5% |
Collector streets | 80 feet | 8% | 0.5% |
Local streets | 66 feet | 10% | 0.5% |
NOTE TO TABLE: * - Distance is measured from lot line to lot line. | |||
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.
(E) Tangents of at least 100 feet in length shall be introduced between reverse curves on collector streets and 50 feet on lesser streets.
(F) Local streets shall be so aligned that their use by through traffic will be discouraged.
(G) Street jogs with center line offsets of less than 150 feet shall be avoided.
(H) Insofar as practical, street intersections shall be at right angles and no intersection shall be at an angle of less than 45 degrees. It must be evidenced that safe and efficient traffic flow is encouraged.
(I) Maximum length of permanent cul-de-sac streets shall be 400 feet measured along the center line from the intersection of origin to the end of 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.
(J) Half-streets shall be prohibited except where the City Council finds it to be practical to require the dedication of the other half when the adjoining property is subdivided.
(K) Proposed street obviously in alignment with existing and named streets shall bear the names of such existing streets. In other cases, the name for the proposed street shall not duplicate existing street names.
(L) Street surfacing done by the developer shall be approved by the City Council.
(M) Private streets shall not be approved nor shall public improvements be approved for any previously existing private street.
(N) No person shall sell any parcel of land in a subdivision located in the city if it abuts on a road which has not been accepted as a public road and is not required to be maintained by the city.
(O) Where a proposed plat is adjacent to a major throughfare, the City Council may require the developer to provide local service drives along the right-of-way of such facilities or they may require that lots should back on the throughfare, in which case, vehicular and pedestrian access between the lots and throughfare shall be prohibited.
(P) 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.
(Q) Curb lines at street intersections shall be rounded at a radius of not less than 20 feet.
(Ord. 126, passed 6-28-76)