Dimensional Design Properties
DESCRIPTION | UNITS | COMMERCIAL & INDUSTRIAL (1) | RESIDENTIAL | |||||
COLLECTOR | LOCAL | CUL-DE-SAC | ||||||
PLATE 1 | PLATE 2 | PLATE 3 | PLATE 4 | PLATE 5 | PLATE 6 | PLATE 7 | ||
Right-of-Way Width (Min.) (2) | FT | 50.0 | 50.0 | 70.0 | 50.0 | 60.0 | 50.0 | 60.0 |
Pavement Width (3) | FT | 32.0 | 29.0 | 25.0 | 27.0 | 23.0 | 26.0 | 22.0 |
Sidewalk Width | FT | 5-ft (As Required) (1) | 5.0 | N/A | 4.0 | N/A | 4.0 | N/A |
Pedestrian Path Width | FT | N/A | N/A | 4.0 | N/A | 4.0 | N/A | 4.0 |
Maximum Grade | % | |||||||
Level | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
Rolling | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | |
Hilly | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | |
Design Speed | mph | |||||||
Level | 35.0 | 35.0 | 35.0 | 35.0 | 35.0 | 30.0 | 30.0 | |
Rolling | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 25.0 | 25.0 | |
Hilly | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 20.0 | 20.0 | |
Intersection Spacing (min) | FT | See Table 3 | ||||||
(Centerline offset of adjacent int.) | ||||||||
Stopping Site Distance (min)(4) | FT | |||||||
Level | 225.0 | 225.0 | 225.0 | 225.0 | 225.0 | 200.0 | 200.0 | |
Rolling | 200.0 | 200.0 | 200.0 | 200.0 | 200.0 | 150.0 | 150.0 | |
Hilly | 150.0 | 150.0 | 150.0 | 150.0 | 150.0 | 125.0 | 125.0 | |
Cul-de-Sac Length (max) | FT | NOTE 1 | 900.0 | 900.0 | ||||
Cul-de-Sace PVMT Radius (max) | FT | NOTE 1 | 50.0 | 50.0 | ||||
Cul-de-Sac R/W Radius (max) | FT | NOTE 1 | 60.0 | 60.0 | ||||
NOTES:
1) Commercial and industrial design may vary according to the proposed type of commerce or industry and the associated vehicular loadings & movements. Additional right-of-way required with the inclusion of sidewalks.
2) Excludes additional private and/or public utility easement on both sides of the street 10- feet in width, each side.
3) Urban pavement widths are measured from back-of-curb to back-of-curb. Rural pavement widths are measured from edge-of-pavement to edge-of-pavement.
4) At Design Speeds listed above.