§ 154.31 STREET PLAN.

   (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 proposed uses of the land to be served by the streets.

   (B)   Where such is not shown on the Comprehensive 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 to meet a particular situation where topographical or other conditions make continuance or conformance to existing streets impractical.

   (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 major thoroughfare, as shown on the Comprehensive Plan, the Commission may require marginal access streets; double frontage with screen planting contained in a non-access reservation at least 10 feet wide, along the rear property line; deep lots with rear service alleys, or the 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 Commission may require a street approximately parallel to and on each side of the 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. The distances shall also be determined with due regard for the requirements of approach and future grade separations.

   (F)   Reserve strips controlling access to public utilities, streets or alleys shall be prohibited.

   (G)   All street intersections and confluences should be constructed in a manner to insure safe traffic flow.

   (H)   Street jogs with centerline offsets of less than 125 feet shall be avoided.

   (I)   When connecting street lines deflect from each other at any one point by more than 10 degrees, they shall be connected by a curve with a radius adequate to insure clear sight distances (see division (Q) below, Table of Minimum Standards).

   (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 60 degrees.

   (K)   Street right-of-way widths shall be as specified in division (Q) below, Table of Minimum Standards.

   (L)   Half-streets shall be prohibited with the following exception. Wherever an existing half- street is adjacent to a tract to be subdivided, the other half of the street shall be platted within the tract.

   (M) Dead-end streets (cul-de-sac), designed to be so permanently, shall not be longer than 500 feet from the intersection of the origin through the center of the circle of 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 90 feet and a street property line diameter of at least 120 feet.

   (N)   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 Plan Commission and City Council.

   (O)   Street gradients and horizontal curves shall be as specified in the Table of Minimum Standards.

   (P)   Street grades shall provide proper relation between the street and the first floor elevation of the houses or buildings and permit convenient and economical access to and drainage of the lots.

   (Q)   The table of minimum standards is as follows.

TABLE OF MINIMUM STANDARDS FOR STREET DESIGN
Street	Right-of-Way Width (feet)	Pavement Width (feet)*	Radius of Horizontal Curves (feet)	Maximum Gradient (Percent)	Minimum Gradient (Percent)	Clear Sight Distance (feet)	Pavement Specifications
Major	100	48**	500	5	0.5	500	Only portland cement concrete as outlined in § 154.32(B). Curbs and gutters required as per specifications in § 154.32(C).
Collector	80	40	400	5	0.5	400	Minimum portland cement concrete as outlined in § 154.32(B); combination curbs and gutters required as per specifications in § 154.32(C).
Minor	60	28	100	6	0.5	200	See *** below
Cul-de-sac	60	28	200	6	0.5	200	See *** below
Marginal access	40	24	200	6	0.5	200	Only portland cement concrete as outlined in § 154.32(B). Curbs and gutters required as per specifications in § 154.32(C).
In Business and Industrial Districts	80-100	54	500	2	0.5	500	Only portland cement concrete as outlined in § 154.32(B). Curbs and gutters required as per specifications in § 154.32(C).
* Pavement widths are measured face to face of curb where curb and gutters are used.
** Or 2 24-foot roadways, divided by a median strip.
*** Any subdivision having an average density per acre of more than 3.5 dwelling units shall provide portland cement concrete streets or bituminous pavement in accordance with the standards outlined in § 154.32. Combination curbs and gutters shall be provided in accordance with § 154.32. Any subdivision having an average density per acre of 3.5 dwelling units or less shall provide, at minimum, oil and chip streets in accordance with the standards outlined in § 154.32.

 

(1992 Code, § 154.31)  (Ord. 061278, passed 6-12-1978)  Penalty, see § 154.99