(a) Design and Arrangement.
(1) The arrangement of streets in new subdivisions shall make provisions for the continuation of the principal existing streets in adjoining area (or their proper projection where adjoining land is not subdivided) insofar as they may be deemed necessary for public requirements. Every subdivision shall have access to a public right of way.
(2) The street and alley arrangement shall be such as not to cause hardship to owners of adjoining property when they plat their own land and seek to provide for convenient access to it. Residential streets shall be so designed as to discourage through traffic, but offset streets should be avoided.
(3) The angle of intersection between minor streets and major streets should not vary by more than ten degrees from a right angle. All other streets should intersect each other as near to a right angle as possible.
(4) The minimum curb radius shall be twenty feet to the face of the curb. Without curb, the minimum pavement radius shall be thirty feet to the edge of the pavements.
(5) Residential streets shall be designed to discourage through traffic which may otherwise use secondary or major highways, and whose origin and destination are not within the subdivision. Residential streets extending for considerable distance, parallel to any secondary or major street, should be avoided.
(b) Alignment.
(1) Vertical. For main thoroughfares, profile grades shall be connected by vertical curves of a minimum length equivalent to twenty times the algebraic difference between the rates of grade, expressed in feet per hundred; for secondary and minor streets and alleys, fifteen times.
(2) Minimum horizontal. The radii of center line curvature shall be:
Degrees | Feet | |
Primary thoroughfares | 12 | 475 |
Secondary thoroughfares | 19 | 300 |
Minor streets | 28 | 200 |
Streets shorter than 500 feet | 58 | 100 |
A minimum fifty-foot tangent shall be introduced between reverse curves.
(3) Visibility requirements.
A. Minimum vertical visibility (measured four and one-half feet eye level to tail light eighteen inches above ground level) shall be:
500 feet on primary thoroughfares
300 feet on secondary thoroughfares
200 feet on minor streets
100 feet on streets shorter than 500 feet.
B. Minimum horizontal visibility shall be:
500 feet on main thoroughfares measured on the center line
300 feet on secondary thoroughfares measured on the center line
100 feet on all other streets measured on the center line.
(c) Street Type and Width.
(1) Major thoroughfares. The width of all major thoroughfares shall conform to the width designated on the Official Thoroughfare Plan of the City.
(2) Collector streets. The minimum right-of-way widths of all collector streets shall be sixty feet.
(3) Local streets. The minimum right-of-way width of local streets shall be fifty feet and the pavement width shall be thirty feet, except where there are unusual typographical or other physical conditions, in which case the Commission may require a greater width for a local street. The minimum width of local streets serving multiple dwellings shall be sixty feet and the pavement width shall be thirty-six feet.
(4) Location. When a proposed subdivision is adjacent to or contains a State highway, the developer and Commission should seek information from the Ohio Department of Transportation as to the status of the highway in reference to width, direction and access thereto.
(5) Half streets. Dedication of new half streets shall not be permitted. Where a dedicated or platted half street or alley exists adjacent to the tract being subdivided, the other half shall be platted, if deemed necessary by the Commission.
(6) Cul-de-sacs. Each cul-de-sac shall be provided with a turn-around having a minimum right-of-way radius of fifty feet. The outside of the road surface within the turn-around right of way shall have a minimum radius of forty feet. The maximum length for a cul-de-sac shall be 600 feet.
(7) Dead-end streets. Dead-end streets, designated to be so permanently, shall not be permitted. Any dead-end street of a temporary nature, if longer than 200 feet or fronted by existing lots, shall have a surfaced turning area equal in diameter to the width of such street at its termination.
(8) Limitation of number of vehicular access points to arterial highways or major streets. Safety factors and the need for effective utilization of the major thoroughfares require limiting the number of vehicular access points to arterial highways and major streets to promote efficient traffic movement and reduce safety hazards. This principle shall be implemented by the developer as follows:
Where a subdivision adjoins an arterial highway or major street, vehicular access to subdivided lots shall be kept to a minimum and shall not exceed the following standards:
Feet of Frontage | Maximum Number of Vehicular Access Points |
Less than 500 feet | One |
500 feet to 1,000 feet | Two |
Over 1,000 feet | Two for the first 1,000 feet of frontage; plus one point of access for each additional 1,000 feet of frontage |
The local street arrangement connecting with these access points may be accomplished in one of three ways:
A. Marginal access street with a planting strip of a minimum width of twenty feet between the major street or highway pavement and marginal access street pavement. The marginal access street shall have a minimum pavement width of twenty feet.
B. Local street (reverse frontage) with residences facing away from the major thoroughfare. In this case, the rear yards (those between the residences and the major thoroughfare) shall have a minimum depth of seventy feet which includes a twenty-foot strip reservation abutting the major thoroughfare for screen planting of trees and shrubs. A masonry or wooden ornamental screen may be substituted for the planting. (See Section 1155.06
(c).)
C. Intersecting local streets or cul-de-sac streets perpendicular to the major thoroughfare.
(9) Street grades. Street grades shall not exceed the following with due allowances for reasonable vertical curves. The City Engineer may permit deviations from these requirements where the topography is such that these regulations are not practical.
Percent | |
Primary thoroughfare | 5 |
Secondary thoroughfare | 8 |
Minor streets and alleys | 12 |
Streets shorter than 500 feet and cul-de-sacs | 15 |
No street grade shall be less than one percent.
(10) Street names. New names are required for new streets. The names shall meet with the approval of the Planning Commission. No name shall be similar in spelling or pronounciation to that of an existing street in the City or the same postal zone. Streets which are essentially continuous shall have the same name.
(11) Acceptance of streets. The City Engineer shall, upon written request by the owner of the land upon which the street has been constructed, check the construction by stages and if the Engineer finds that such street is constructed in accordance with the specifications set forth on the approved plat and that such street is in good repair, then such finding, endorsed on the approved plat, shall constitute an acceptance of the street for public use by the City.