Road Classification
|
Definition: Vehicle Trips per Day
|
ROW Width
(feet)
|
Pavement Width
(feet)
|
---|---|---|---|
Arterial
|
Greater than 5,000
|
60
|
32
|
Collector
|
1,000 to 5,000
|
60
|
30
|
Local
|
200 to 1,000
|
50
|
26
|
Limited local (dead-end streets)
|
Fewer than 200
|
50
|
24
|
Minimum Street Standards
|
Arterial
|
Collector
|
Local
|
Limited Local
|
---|---|---|---|---|
ROW width (feet)
|
60
|
60
|
50
|
50
|
Pavement width (feet)
|
32
|
30
|
26
|
24
|
Maximum grade
|
5%
|
8%
|
8%
|
8%
|
Minimum grade
|
1%
|
1%
|
1%
|
1%
|
Minimum length of vertical curve (feet)
|
100 but not less than 30 for each 1% algebraic difference in
grade
| |||
Minimum curb radius at intersection (feet)
|
25
|
25
|
25
|
25
|
Minimum sight distance
|
In accordance with AASHTO standards*
| |||
Permanent cul-de-sac ROW diameter (feet)
|
NP
|
NP
|
110
|
110
|
Pavement diameter (feet)
|
NP
|
NP
|
NP
|
NP
|
Temporary cul-de-sac diameter (feet)
|
NP
|
NP
|
110
|
110
|
Pavement diameter (feet)
|
NP
|
NP
|
90
|
90
|
NP - Not Permitted
| |
---|---|
*
|
Applicants shall determine the 85th percentile of operating
speed on existing streets by conducting a speed study or by determining
the AASHTO sight distance requirements for the posted speed limit
plus 10 miles per hour.
|
Square Mesh Sieves
|
Percent
|
---|---|
Passing 5/8 inch
|
100
|
Passing 1/2 inch
|
90 to 100
|
Passing 3/4 inch
|
30 to 100
|
Passing #4
|
0 to 80
|
Passing #8
|
0 to 35
|
Passing #100
|
0 to 2
|