Alternatives
|
Type
|
Local Access***
|
Collectors and Arterial
| ||
---|---|---|---|---|---|
Rigid Pave
|
Plain Cem. Conc.
|
6"
|
6"
| ||
Sub Base
|
6"*
| ||||
Flexible Pave
| |||||
Surface
|
ID - 2
|
1 1/2"
|
1 1/2"
| ||
Base
|
Bit-Conc.
|
2"
|
6"
| ||
Subbase
|
S.B.
|
6"
|
6"
| ||
Surface
|
ID - 2
|
1 1/2"
|
1 1/2"
| ||
Base
|
A-L-P/Agg-Cem
|
5"
|
6"
| ||
Subbase
|
S.B.
|
6"
|
6"
| ||
Surface
|
ID - 2
|
2 1/2"**
|
3"
| ||
Base
|
Crushed Agg
|
6"
|
10"
| ||
Subbase
|
S.B.
|
6"
|
9"
| ||
Surface
|
ID - 2
|
1 1/2"
|
1 1/2"
| ||
Base
|
Agg - Bit.
|
5"
|
7"
| ||
Subbase
|
S.B.
|
6"
|
9"
|
NOTES:
| ||
---|---|---|
*
|
Only required for silty soils or poorly drained conditions
| |
**
|
Or 3 inches FB-1 or FB-2
| |
***
|
Including service roads and marginal access streets
|