A. All streets shall be considered in their relation to existing and planned streets, to topographical conditions, to public convenience and safety, and in their relation to the proposed uses of the land to be served by such streets.
B. Where such is not shown on the General Development Plan, 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 area or neighborhood approved or adopted by the Plan Commission-Zoning Board 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 that their use by through traffic will be discouraged.
D. Where a subdivision abuts or contains an existing or proposed highway or primary thoroughfare, as shown on the General Development Plan, the Plan Commission-Zoning Board may require marginal access streets; reverse frontage with screen planting contained in a nonaccess reservation, at least ten feet (10') wide, 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 or highway, the Plan Commission-Zoning Board may require a street approximately parallel to and on each side of such railroad or highway, 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 public utilities, alleys or streets shall be prohibited.
G. All street intersections and confluences should encourage safe traffic flow.
H. Street jogs with center line offsets of less than one hundred twenty five feet (125') shall be avoided.
I. Tangents shall be introduced between reverse curves on all streets (see Table of Minimum Standards For Street Design of this Section).
J. When connecting street lines deflect from each other at any one point by more than ten degrees (10°), they shall be connected by a curve with a radius adequate to ensure clear sight distances (see Table of Minimum Standards For Street Design of this Section).
K. 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 (60°).
L. Property lines at street intersections shall be rounded with a radius as specified in the Table of Minimum Standards For Street Design of this Section. The Plan Commission-Zoning Board may permit comparable cutoffs or chords in place of rounded corners.
M. Street right-of-way widths shall be as specified in the Table of Minimum Standards For Street Design of this Section.
N. 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 Plan Commission-Zoning Board 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.
O. Dead-end streets (cul-de-sac), designed to be so permanently, shall not be longer than five hundred feet (500') measured from the center line of the street intersection of the origin through the center of the circle to the end of the right of way, and shall be provided at the closed end with a paved turnaround having an outside pavement diameter of at least eighty feet (80') and a street property line diameter of at least one hundred feet (100').
P. No street names shall be used which will duplicate or be confused with the names of existing streets. Existing street names shall be projected wherever possible. Street names shall be subject to the approval of the City Council.
Q. Street gradients and vertical curves shall be as specified in the Table of Minimum Standards For Street Design of this Section.
R. Street grades shall provide proper relation between the street and the first floor elevation of the houses or buildings to permit convenient and economical access to and drainage of the lots. (Ord. 69-24-0)
MINIMUM STANDARDS FOR STREET DESIGN
Street | Right- Of-Way Width | Roadway Width | Radius Of Horizontal Curves | Length Of Vertical Curves | Tangent Between Reverse Curves | Maximum Gradient | Minimum Gradient | Clear Sight Distance | Tangent Property Lines At Street Intersections
|
Street | Right- Of-Way Width | Roadway Width | Radius Of Horizontal Curves | Length Of Vertical Curves | Tangent Between Reverse Curves | Maximum Gradient | Minimum Gradient | Clear Sight Distance | Tangent Property Lines At Street Intersections
|
Expressways* | 200' | 500' | 200' | 200' | 5% | 0.35% | 500' | ||
Local expressways* | 100' | 500' | 200' | 200' | 5% | 0.35% | 500' | ||
Primary* | 80'-100' | 500' | 200' | 200' | 5% | 0.35% | 500' | 25' | |
Secondary* | 80' | 40' | 400' | 200' | 200' | 5% | 0.35% | 400' | 20' |
Collector | 66' | 37' | 400' | 150' | 150' | 6% | 0.35% | 300' | 20' |
Minor/for row houses and apartments | 66' | 37' | 300' | 150' | 150' | 6% | 0.35% | 200' | 15' |
Minor/for single-family residences | 66' | 32' | 100' | 100' | 100' | 6% | 0.35% | 200' | 15' |
Cul-de-sac | 50' radius | 40' radius | 200' | 100' | 100' | 6% | 0.35% | 200' | 15' |
Marginal access | 40' | 20' | 200' | 100' | 100' | 6% | 0.35% | 200' | 15' |
In business and industrial districts | 80'-100' | 56' | 500' | 200' | 200' | 2% | 0.35% | 500' | |
*Minimum standards for these streets shall be as indicated or as determined by the Plan Commission-Zoning Board and the City Engineer. 100' right of way required on section lines.
(Ord. 69-24-0; amd. Ord. 00-08-0, 2-23-2000)