Design Element
|
Major
Street
|
Secondary
Street
|
Local
Street
| |
---|---|---|---|---|
Minimum right-of-way width (feet)
|
60
|
60
|
50
| |
Minimum traveled-way width (excluding shoulders)
(feet)
|
30
|
30
|
20
| |
Maximum grade
|
6%
|
8%
|
10%
| |
Minimum grade
|
1%
|
1%
|
1%
| |
Minimum radius of horizontal curve at center
line (feet)
|
400
|
250
|
125
| |
Minimum length of vertical curve (feet)
|
300
|
2001
|
1002
| |
Minimum length of tangent between reverse curves
(feet)
|
300
|
200
|
100
| |
Minimum sight distance (feet)
|
400
|
300
|
200
| |
Road pavement, shoulders, sidewalks, drainage
structures, curbs, etc.
|
See Town Construction Standards and Specifications
| |||
Notes:
| ||||
1But not less than
40 feet for each 1% algebraic difference in grade.
| ||||
2But not less than
20 feet for each 1% algebraic difference in grade.
|