Street Design Manual

Section 12.1.3 Cul-de-sac Design A. Minimum dimensions for circular cul-de-sac streets are shown in the City of Raleigh Standard Details Manual. Alternative turnaround designs on residential streets serving six dwelling units or less may be considered for alternate designs. Alternative designs must readily accommodate emergency vehicles and Solid Waste Trucks. B. Medians may be permitted where the cul-de-sac radius is increased and it can be demonstrated that emergency vehicles and sanitation trucks can be accommodated. The City will not maintain landscaped medians and a private maintenance agreement for the median shall be required to be approved by the City Attorney through the Encroachment Process. Section 12.1.4 Intersection Design Streets should intersect at or as near 90 degrees as possible, but no less than 75 degrees. Intersections with more than four legs should be avoided whenever possible. The following table describes optimal street spacing specifications. To achieve the optimal level of connectivity and street spacing shown in the following table, a variety of street network patterns can be implemented.

Table 14 Optimal Street Spacing requirements Street Type

Optimal Street type Spacing Optimal Cross-Street Spacing

Parkway (4-6 lane), Multi-Way Boulevard (6 lane) Parkway (4 lane), Multi-Way Boulevard (4-6 lane), Avenue (6 lane) Avenue (6 lane), Avenue (4 lane, no parking) Avenue (3-4 lane), Main Street (2-3 lane) Avenue (2-lane), Main Street (2-3 lane), Industrial Street, Local Streets (Mixed) Local Streets (Residential)

4-6 miles

1/2 mile

4-6 miles

1/2 mile

1 mile

1/4 mile

1 mile

300 - 600'

1/4 mile (1200')

300 - 600'

150 - 600'

150 - 600'

Raleigh Street Design Manual – Page 86