Part 2 — Unified Development Ordinance Subdivision Regulations
City of Andover Unified Development Manual
I. Alleys. 1. Provide rights-of-way for alleys where appropriate, for service access consistent with proposed land uses. a. Provide alleys in commercial and industrial areas. (1) The Planning Commission may waive this requirement, if other provisions are made for service access. b. Provide alleys in mixed-use areas where appropriate. c. Alleys in residential districts are discouraged. 2. Alley right-of-way must be at least 20 feet wide. 3. Alley intersections, sharp changes in alignment, or dead ends are prohibited. J. Frontage Roads. Minimum requirements for the improvement of frontage roads will be determined by an approved Corridor Plan. (See definition of FRONTAGE ROAD.) K. Sidewalks. Sidewalks must be constructed of 6 inch thick concrete over 95% compacted soil subgrade.
1. Maximum Length . a. In single-family residential areas, cul-de-sacs should be no longer than 500 feet, or 7 times the average lot width, whichever is less. b. In multiple-family residential areas, cul-de-sacs must be no more than 300 feet long. 2. Turn-arounds . (See definition of TURN-AROUND.) a. In urban-type subdivisions , cul-de-sac turn-arounds must have a street right-of-way diameter of at least 100 feet, and a roadway diameter of at least 70 feet. (1) An alternate turn-around design (hammerhead, etc.) may be acceptable if it provides service equal to a required cul-de-sac and meets Fire Code requirements. b. In rural-type subdivisions , street right-of-way diameter for a cul-de-sac turn-around may be 120 feet or more, as necessary to meet the needs of fire protection and other equipment.
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