§ 5-4. Design standards.

The following design standards shall be considered minimum requirements and shall specifically apply to residential subdivisions. The requirements for non-residential subdivisions (see section 9-4) shall be such as the Planning Commission deems appropriate for the type of development and use contemplated but in no event be less than the requirements of residential subdivisions.

5-4-1  Right-of-way widths. Minimum street right-of-way widths shall be not less than the following:

Expressway	200 - 300 feet
Arterials	80 - 200 feet
Collectors	60 - 80 feet
Minor Street	50 feet
Alley	20 feet

 

5-4-2  Pavement widths. Pavement width from face of curb to face of curb shall be not less than the following:

Expressway	varies; 12 per lane, 8-10' shoulders, 8-10' median
Arterials	varies; 12' per lane, 8-10' shoulders, 8-30' median
Collectors	44' (2-12' traffic lanes; 2-10' parallel parking lanes)
Minor Street	36' where parking is permitted, 24' without parking
Alley	16 feet

 

5-4-3  Street grades. Street grades shall not exceed the following unless otherwise approved by the City Engineer and approved by the Planning Commission. Minimum grades of any roadway shall not be less than one-half percent.

Expressway	6%
Arterials	8%
Collectors	12%
Minor Street	15%

 

5-4-4  Horizontal curves. Where a centerline deflection angle occurs, a circular curve shall be introduced, having a centerline radius of not less than the following:

Collectors	200 feet
Minor Street	100 feet

 

5-4-5  Tangents. Tangents between reverse curves shall be a minimum of 100 feet in length.

5-4-6  Centerline offsets. The minimum distance between centerline offsets at street jogs shall be 125 feet.