1117.04 STREET PATTERN: RESIDENTIAL AREAS.
The primary function of local streets is to provide direct access to each lot and development. The local street system should be designed to minimize through traffic movements. This can be accomplished by adequate peripheral collector street capacity, and by creating discontinuities in the local street pattern, by offsetting local street intersections and providing loop streets or cul-de-sac streets. Every part of a residential area should be interconnected for convenience and to avoid excessive indirect travel except where connections are not feasible because of topographic conditions.
The pattern should be logical and comprehensive for the convenience of the local residents, visitors and for providing services. The design should be planned to provide these basic functions so as not to need to rely on extensive traffic regulations. The streets should be designed for uniformly low volumes of traffic, commensurate with residential amenities, and to discourage speeds of more than twenty-five miles per hour. The amount of space devoted to local streets should be minimized for costs and economy of land use.
There should be a basic underlying design related to the topography and natural features. The pattern should also be related to attaining functional, economical and practical patterns, shapes and sizes of areas for development. Necessary traffic generators such as schools, bus routes and playgrounds should serve as focal points in the pattern and such routes should have a minimum number of pedestrian crossings. There should be a minimum number of intersections; tee-intersections should predominate, cross-intersections should be minimized.
(Ord. 69-38. Passed 4-20-70.)
(a) Right-of-Way and Pavement Widths. Whenever local streets are planned in accordance with the criteria set forth in this section, the right-of-way width of such street shall be sixty feet and the pavement width between curbs shall be twenty-six feet. However, in constructing a street in accordance with Section 1119.09(a)(3), the right-of-way width shall be sixty feet and the pavement width shall be twenty feet from berm to berm.
(Ord. 85-5. Passed 4-15-85.)
(b) Intersections. Streets shall be designed to intersect as nearly at ninety degrees as possible; no street shall intersect another at less than seventy degrees. The intersection of more than two streets at a point or with center line offsets of less than 200 feet shall not be permitted.
The vertical alignment, or grade within 100 feet of an intersection should not exceed three percent. An unobstructed "sight triangle" of not less than seventy- five feet measured along the center lines of the intersecting streets shall be provided. Property lines at street intersections shall be rounded with a radius of not less than thirty feet for arterial streets; twenty feet for collector streets; twelve feet for local streets.
(c) Vertical Alignment. The maximum grade for local streets should not exceed four percent in "ordinary (0% to 8%) terrain"; grades exceeding seven percent should be permitted for only short distances of approximately 200 feet. A rate of change of three to four percent per 100 feet is the maximum recommended to provide a safe sight distance.
(d) Horizontal Alignment. Properly designed curving residential streets are encouraged. Angles of horizontal alignment of the center lines of streets shall be connected by a curve with a radius of not less than 150 feet; between reverse curves there shall be a center line tangent of not less than 100 feet.
(e) Streets: Cul-de-sac; Permanent Dead-end. Cul-de-sac streets or permanent dead-end streets shall be permitted where parcels are surrounded by allotments, where irregular topography would require excessive grading for continuous streets or where other types of nonthrough streets would not provide sufficient discouragement of through traffic. All cul-de-sac streets shall be terminated with a permanent turn-around or square having a minimum curb radius of fifty feet and a street property line radius of sixty-five feet. Cul-de-sac streets shall not exceed 500 feet in length unless an additional turn-around or square is provided. If the cul-de-sac street does not open in the direction of schools or playgrounds, a pedestrian-way may be required. In addition, the Commission may require that the center of the turn-around be planted with permanent evergreens and ground cover, and that the turn-around be designed to provide additional parking spaces.
(f) Temporary Dead-end Streets. Where a proposed subdivision adjoins undeveloped land, a temporary "T" turn-around may be provided for each street if not more than 500 feet in length. Provisions shall be made for the future extension of such streets and utilities, and for the reversion of the excess right of way to the abutting properties.
(g) Streets of Nonconforming Width. Streets of less than the required width shall not be permitted except where the Planning and Zoning Commission finds such a street will be adequate to serve the proposed development. Wherever property abuts a street which does not conform to the width required by the Street Plan, the Subdivision Regulations or plans of the County or State Department of Transportation, the additional width shall be provided when the land is subdivided.
(h) Reserve Strips Adjoining Streets. A division of land to prevent access or extensions to pavement and/or utilities to another property shall not be permitted except where the control and provisions for disposal of such land division has been assigned to the City.
(i) Driveways. Driveways shall be located at least sixty feet from the intersection of the projection of the right-of-way lines of the nearest intersecting streets.
(j) Street Names. Names shall be selected which will not duplicate or be confused with the names of existing streets in Cuyahoga County irrespective of modifying terms such as street, avenue, boulevard, etc. Streets that are or will eventually be continuations of existing or platted streets shall be named the same. Street names shall be subject to the approval of the Commission.
(Ord. 69-38. Passed 4-20-70.)