(a) The arrangement, 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.
(b) The arrangement of streets in a subdivision shall either:
(1) Provide for the continuation; or appropriate projection of existing principal streets in surrounding areas; or
(2) Conform to a plan for the neighborhood approved or adopted by the Planning Commission to meet a particular situation where topographical or other conditions make continuance or conformance to existing streets impracticable.
(c) Minor streets shall be so laid out so that their use by through traffic will be discouraged.
(d) Where a subdivision abuts or contains an existing or proposed arterial street, the Planning Commission may require marginal access streets, reverse frontage with screen planting contained in a nonaccess reservation along the rear property line, deep lots with rear service alleys, or such other treatment as may be necessary for adequate protection of residential properties and to afford separation of through and local traffic.
(e) Where a subdivision borders on or contains a railroad right of way, the Planning Commission may require a street approximately parallel to and on each side of such right of way, at a distance suitable for the appropriate use of the intervening land, as for park purposes in residential districts, or for commercial or industrial purposes in appropriate districts. Such distances shall also be determined with due regard for the requirements of approach grades and future grade separations.
(f) Reserve strips controlling access to streets shall be prohibited except where their control is definitely placed on the City under conditions approved by the Planning Commission.
(g) Street jogs with centerline offsets of less than 125 feet shall not be permitted.
(h) A tangent at least 100 feet long shall be introduced between reverse curves on arterial and collector streets.
(i) When connecting street lines deflect from each other at any one point by more than ten degrees, they shall be connected by a curve with a radius adequate to insure a sight distance of not less than 150 feet for minor and collector streets, and of such greater radii as the Planning Commission shall determine for special cases.
(j) Streets shall be laid out so as to intersect as nearly as possible at right angles and no street shall intersect any other street at less than sixty degrees.
(k) Property lines at street intersections shall be rounded with a radius of ten feet or of a greater radius where the Planning Commission may deem it necessary. The Planning Commission may permit comparable cut-offs or chords in place of rounded corners.
(l) Street right-of-way and paving widths shall be not less than as follows:
Minimum right of way (feet) | Minimum roadway (feet) | |
Arterial | 60 and over | 40 |
Collector (if parking allowed both sides) | 60 | 40 |
Collector (if parking allowed one side only) | 60 | 32 |
Minor, residential (parking allowed one side only) | 60 | 28 |
Minor, residential (parking allowed both sides) | 60 | 36 |
Marginal access (no parking) | 40 | 20 |
(m) Half streets shall be prohibited, except where essential to the reasonable development of the subdivision in conformity with the other requirements of these Regulations; and where the Planning Commission finds it will be practicable to require the dedication of the other half when the adjoining property is subdivided. Wherever a half street is adjacent to a tract to be subdivided, the other half of the street shall be platted within such tract.
(n) Dead-end streets shall be prohibited unless not longer than 600 feet and provided at the closed end with a turn-around having an outside roadway diameter of at least eighty feet, and a street property line diameter of at least 100 feet.
(o) No street names shall be used which will duplicate or be confused with the names of existing streets. Street names shall be subject to the approval of the Planning Commission.
(p) Street grades, wherever possible, shall not exceed the following with due allowance for reasonable vertical curves:
Street | Percent |
Arterial | 6 |
Collector (if parking allowed both sides) | 6 |
Collector (if parking allowed one side only) | 6 |
Minor, residential (if parking allowed one side only) | 10 |
Minor, residential (if parking allowed both sides) | 10 |
Marginal access | 10 |
(q) No street grade shall be less than three fourths of one percent (0.75%).
(Ord. 731120-127. Passed 1-15-74.)