Laserfiche WebLink
<br />I, Physical conditions that preclude development of a public street. Such conditions may <br />include, but are not limited to, topography or the existence of natural resource areas such as <br />wetlands, ponds, streams, channels, rivers, lakes or upland wildlife habitat area, or a resource <br />on the National Wetland Inventory or under protection by State of Federal law; or <br />2. Buildings or other existing development on adjacent lands, including previously subdivided <br />but vacant lots or parcels, physically preclude a connection no\v or in the future, considering <br />the potential for redevelopment. <br /> <br />Grade <br /> <br />New street grades in excess of 20% are prohibited. Maximum grade of 15% with up to 200' <br />lengths of grades up to 20%, but no intersections or drive\vay access in areas with grades above <br />150/0, <br /> <br />Private Streets and AlIevs <br /> <br />Private local streets are required to be designed to the same standards as public streets in the <br />following categories: <br />a. Intersection configuration (spacing and intersection angles), <br />b. Minimum centerline radius length (AAHTO standard). <br />c. Grade: Maximunl grade of 15% with up to 200' lengths of grades up to 200/0, but no <br />intersections or driveway access in areas with grades above 15%. <br />d. Sight distance. <br />e. Width: Minimum 20 feet <br />g. Curb height where necessary for roof drains, safety or ADA requirements <br />h. Street alignments in relation to natural resource sites and water-related features. <br /> <br />Sidewalks are required, but reduced sidewalk width is allowed; curbside or meandering <br />sidewalks that don't parallel the street are allowed; and sidewalks are allowed on one side of the <br />street. Sidewalks must meet ADA requirements, which allows a minimum width of 3' provided <br />that "passing space" is provided at "reasonable intervals, not to exceed 200 feet." <br /> <br />Private alleys are required to comply with the standards for public alleys in the following <br />categories: <br />a. Intersection configuration. <br />b. Grade <br />c. Width and setback requirements. <br />d. Curb requirements (if asphalt). <br /> <br />The structural design and construction inspection for private streets and alleys would remain the <br />developers responsibility. Certification by a licensed engineer that a structural design meeting <br />the public design standards outlined above has been completed would be submitted with the land <br />use application. <br />