(A) The subdivision of land, including the arrangement, character, extent, width, grade and location of all expressways, streets, alleys, crosswalks, easements, sites for parks, playgrounds and schools, or other land to be dedicated for public use, shall conform to the General Development Plan of the city as approved by the Plan Commission and adopted by the City Council and other responsible governmental bodies of the city as a part of the Official Plan of the city.
(1) All streets shall be considered in their relation to existing and planned streets, in typographical conditions, to public convenience and safety, and in their appropriate relation to the proposed uses of the land to be served by such streets. When at all possible each subdivision shall have a minimum of two separate entrances. Said entrances shall be remote located from one another such as at opposite diagonal corners of the subdivision, or some similar spacing.
(2) Where such is not shown in the General Development Plan, the arrangement of streets in a subdivision shall either:
(a) Provide for the continuation or appropriate projection of existing principal streets, or
(b) 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 impracticable.
(3) Minor streets shall be so laid out that their use by through traffic will be discouraged.
(4) Where a subdivision abuts or contains an existing or proposed expressway or primary street, as shown on the General Development Plan, the Plan Commission may require marginal access streets, reverse frontage with screen planting contained in a non-access reservation, at least ten feet 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.
(5) Where a subdivision borders on or contains a railroad or expressway, the Plan Commission may require a street approximately parallel to and on each side of such railroad or expressway, 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.
(6) Reserve strips controlling access to streets or alleys shall be prohibited.
(7) All street intersections and confluences should encourage safe traffic flow.
(8) Street jogs with centerline offsets of less than 125 feet shall be avoided.
(9) Tangents shall be introduced between reverse curves on all streets (see Table of Minimum Standards in division (B) of this section).
(10) When connecting street lines deflect from each other at any one point by more than 10°, they shall be connected by a curve with a radius adequate to insure clear sight distance (see Table of Minimum Standards in division (B) of this section).
(11) 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°.
(12) Property lines at street intersections shall be rounded with a radius as specified in the Table of Minimum Standards in division (B) of this section. The Plan Commission may permit comparable cut-offs or chords in place of rounded corners.
(13) Street right of way widths shall be as shown in the General Development Plan and where not shown therein shall be as specified in the Table of Minimum Standards in division (B) of this section, or as recommended by the Plan Commission.
(14) 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 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. If pavement is installed on a half street, a temporary vehicle turn around shall be installed as necessary.
(15) 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 to the end of the right-of-way, and shall be provided at the closed end with a turn-around having an outside pavement diameter of at least 80 feet, and a street right-of-way diameter of at least 100 feet.
(16) No street names shall be used which will duplicate or be confused with the names of existing streets. Existing street names shall be continued wherever possible. Street names shall be subject to the approval of the Plan Commission.
(17) Street gradients and vertical curves shall be as specified in the Table of Minimum Standards in this chapter.
(18) Street grades shall provide proper relation between the street and the first floor elevation of the houses or buildings and to permit convenient and economical access to and drainage of the lots.
(B) Minimum standards for street design.
Street Type | Right of Way Width | Pavement Width BOC-BOC | Radius of Horizontal Curves | Length of Vertical Curves | Tangents Between Reverse Curves | Maximum Gradient | Minimum Gradient | Clear Sight Distance | Radius of property lines at intersections | On-Street Parking |
Expressway | 200 ft. | 14 ft. lane | 500 ft. | 200 ft. | 200 ft. | 5% | 0.35% | 500 ft. | — | NONE |
Major Arterial | 100 ft. | 12 ft. lane | 500 ft. | 200 ft. | 200 ft. | 5% | 0.35% | 500 ft. | 25 ft. | NONE |
Minor Arterial | 80 ft. | 40 ft. | 400 ft. | 200 ft. | 200 ft. | 5% | 0.35% | 400 ft. | 20 ft. | NONE |
Major Collector | 80 ft. | 40 ft. | 400 ft. | 150 ft. | 150 ft. | 6% | 0.35% | 300 ft. | 20 ft. | 2 SIDES |
Minor Collector | 60 ft. | 31 ft. | 300 ft. | 150 ft. | 150 ft. | 6% | 0.35% | 200 ft. | 15 ft. | 1 SIDE |
Local | 50 ft. | 27 ft. | 100 ft. | 100 ft. | 100 ft. | 6% | 0.35% | 200 ft. | 15 ft. | 1 SIDE |
Cul-de-sac | 50 ft. | 24 ft. | 200 ft. | 100 ft. | 100 ft. | 6% | 0.35% | 200 ft. | 15 ft. | NONE |
Alley | 20 ft. | 18 ft. | 200 ft. | 100 ft. | 100 ft. | 6% | 0.35% | 200 ft. | 15 ft. | NONE |
In Business District | 80-100 ft. | 56 ft. | 500 ft. | 200 ft. | 200 ft. | 2% | 0.35% | 500 ft. | — | 2 SIDES |
('71 Code, § 12-4-1) (Ord. 1447, passed 10-28-63; Am. Ord. 3265, passed 8-14-00) Penalty, see § 10.99