Road Classification
|
Right-of-Way Width
(feet)
|
Cartway Width
(feet)
|
---|---|---|
Arterial
|
80
|
32
|
Major collector
|
60
|
30
|
Minor collector
|
60
|
24
|
Local, including culs-de-sac
|
50
|
20
|
Caliper
(inches)
|
Minimum Ball Diameter
(inches)
|
---|---|
2 to 2 1/2
|
26
|
2 1/2 to 3 1/2
|
34
|
3 1/2 to 5
|
44
|
5 to 6
|
54
|
Layer Designation
|
Layer Description
|
Anticipated Load
|
Light
|
Moderate
|
Moderately Heavy
|
Heavy
|
---|---|---|---|---|---|---|
A - Wearing course
|
Bituminous
|
1.5
|
1.5
|
1.5
|
1.5
| |
B - Base course
|
Bituminous or concrete
|
2.5
|
2.5
|
3.0
|
4.5
| |
C - Structural base
|
Granular (stone)
|
6.0
|
6.0
|
8.0
|
8.0
|
Minimum Number and Caliper of Tree to Be Removed
|
Minimum Caliper of Tree To Be Planted as a Replacement
| |
---|---|---|
1, 8" to 12"
|
1, 4" to 4 1/2"
|
or 2, 3 1/2"
|
1, 12" to 18"
|
1, 5" to 5 1/2"
|
or 3, 3 1/2"
|
1, 18" to 24"
|
1, 6" to 6 1/2"
|
or 4, 3 1/2"
|
1, greater than 24"
|
2, 6" to 6 1/2"
|
or 5, 3 1/2"
|
Refer to Appendix A for information on approved tree species
and prohibited invasive species.[1]
|