Rural Collectors
|
Residential Collectors
|
Local Streets
| ||
---|---|---|---|---|
Minimum right-of-way width (feet)
|
80
|
60
|
60
| |
Minimum radius of horizontal curves (feet)
|
1,000
|
500
|
150
| |
Minimum tangent between reverse curves (feet)
|
300
|
100
|
100
| |
Minimum grade
|
0.5%
|
0.5%
|
0.5%
| |
Maximum grade
|
5%
|
7%
|
7%
| |
Minimum stopping sight distance (feet)
|
400
|
250
|
200
| |
Maximum grade within 100 feet of intersections
|
2%
|
2%
|
3%
| |
Minimum intersection curb radius (feet)
|
30
|
30
|
25
|
System
|
Storm Frequency
| |
---|---|---|
Cross culverts
|
Fifty-year
| |
Storm sewer system
|
Five-year
| |
Gutters
|
Five-year
| |
Roadway ditches
|
Ten-year
|