(A) General.
(1) The character, extent, width, grade and location of all streets shall be considered in their relation to existing and planned streets, to topographical conditions, to public convenience and safety, and in their appropriate relation to the proposed uses of the land to be served by such streets.
(2) The arrangements of streets in a subdivision shall either provide for the continuation of existing streets in surrounding areas or conform to a plan for the neighborhood approved or adopted by the Council to meet a particular situation, where topographical or other conditions make continuance of existing streets impractical.
(3) Residential streets or minor streets should be so arranged as to discourage their use by through traffic.
(4) Where a subdivision abuts on or contains an existing or proposed arterial street, marginal access streets, reverse frontage with screen plantings, non-access reservations along arterial property lines abutting the arterial streets, deep lots, or such other treatment as may be necessary for protection of residential properties is encouraged. Direct frontage and/or access to arterial streets should be avoided.
(5) Street traffic should be designed to flow toward arterial and collector streets. Streets should fit the contours of the land. Street grades, where feasible, shall not be greater than 8% and not less than .5%.
(B) Half streets. Dedication of half streets shall be prohibited, except where essential to reasonable development of future subdivisions.
(C) Dead end streets and cul-de-sacs. Dead end streets are prohibited, but cul-de-sacs will be permitted. Cul-de-sacs shall not be longer than 500 feet, including a turn-around at the closed end. The turn-around shall have a minimum outside curb radius of at least 40 feet and a right-of-way radius of not less than 50 feet; except for T-shaped turn-arounds where permitted.
(D) Street intersections. Streets should intersect as nearly as possible at right angles, except under unusual topographic conditions. The minimum angle of street intersection shall be 80 degrees. Street intersections shall not be off-set less than 150 feet as measured from the center lines and shall have a minimum vertical sight distance of 300 feet as measured 15 feet from the roadway along the center line.
(E) Alleys. Alleys, where provided, shall not be less than 30 feet wide in commercial areas and 20 feet wide in residential areas. Dead end alleys should be avoided, but if unavoidable, adequate turn-around areas shall be provided at the closed end.
(F) Right-of-way standards. Public right-of-way widths shall be dedicated using the following minimum standards or those recommended by the state or county highway department and as approved by the city (in feet):
Public Right-of-Way | Right-of-Way | Paved |
** The Council may decide to approve private common access where appropriate and may require such standards as deemed appropriate.
*** In addition to turn-around requirements outlined in §
151.45
(C).
(G) Street alignment. The horizontal and vertical alignment minimum requirements on all streets shall be as follows (in feet):
Street | Horizontal* | Vertical** |
Arterial | 150 | 500 |
Collector | 50 | 300 |
Minor | 50 | 200 |
Cul-de-sacs | 50 | 100 |
Intersections | 15*** | 300 |
* Radii of center line.
** Minimum sight distance as measured at 4 feet above ground level along the center line. For intersections as measured 15 feet from the edge of the roadway.
*** Curb line radius.
(Prior Code, § 1001.05)