APPENDIX: ROAD STANDARDS
RURAL UNDIVIDED 2 LANE ROAD
MINIMUM R-O-W WIDTHS
FUNCTIONAL
CLASSIFICATION
DESIGN SPEED - mph
20
30
40
50
60
70
RURAL UNDIVIDED 2 LANE ROAD
MINIMUM R-O-W WIDTHS
FUNCTIONAL
CLASSIFICATION
DESIGN SPEED - mph
20
30
40
50
60
70
ARTERIAL - (Volumes to be based on projections)
ADT<750
100
100
100
ADT 750-1000
110
110
110
ADT > 1000
120
120
120
DHV 100-400
120
120
120
DHV > 400
120
120
120
COLLECTOR - (Volumes to be based on projections)
ADT < 750
100
100
100
100
100
ADT 750 - 1000
110
110
110
110
110
ADT > 1000
120
120
120
120
120
DHV 100 - 400
120
120
120
120
120
DHV > 400
120
120
120
120
120
LOCAL - (Volumes to be based on projections)
ADT < 100
66
66
66
66
66
ADT 100 - 200
66
66
66
66
66
ADT 201 - 750
100
100
100
100
100
ADT 750 - 1000
110
110
110
110
110
ADT > 1000
120
120
120
120
120
DHV 100 - 400
120
120
120
120
120
DHV > 400
120
120
120
120
120
ADT - Average Daily Traffic
DHV - Design Hourly Volume (Usually 13-17% of Rural ADT and 8-12% of Urban ADT)
RURAL UNDIVIDED 2 LANE ROAD
STANDARD SURFACE WIDTHS
(Outside shoulder to outside shoulder)
FUNCTIONAL
CLASSIFICATION
DESIGN SPEED - mph
20
30
40
50
60
70
RURAL UNDIVIDED 2 LANE ROAD
STANDARD SURFACE WIDTHS
(Outside shoulder to outside shoulder)
FUNCTIONAL
CLASSIFICATION
DESIGN SPEED - mph
20
30
40
50
60
70
ARTERIAL - (Volumes to be based on projections)
ADT < 750
32
32
32
32
ADT 750 - 1000
36
36
36
36
ADT > 1000
40
40
40
40
DHV 100 -400
40
40
40
40
DHV > 400
44
44
44
44
COLLECTOR - (Volumes to be based on projections)
ADT < 750
32
32
32
32
32
ADT 750 - 1000
36
36
36
36
36
ADT > 1000
40
40
40
40
40
DHV 100 - 400
40
40
40
40
40
DHV > 400
40
40
40
40
40
LOCAL* - (Volumes to be based on projections)
ADT < 100
24
24
24
24
24
24
ADT 100 - 200
24
24
24
24
24
24
ADT 201 - 750
32
32
32
32
32
32
ADT 750 - 1000
36
36
36
36
36
36
ADT > 1000
40
40
40
40
40
40
ADT - Average Daily Traffic

DHV - Design Hourly Volume (Usually 13-17% of Rural ADT and 8-12% of Urban ADT)

* Projected ADT 200 and under applicable to gravel surfaced roadways. Projected ADT over 200 applicable to bituminous roadways.
RURAL UNDIVIDED 2 LANE ROAD
STANDARD GRADE CONTROLS (PERCENT)
FUNCTIONAL
CLASSIFICATION
DESIGN SPEED - mph
20
30
40
50
60
70
ARTERIAL
LEVEL
4
3
3
ROLLING
4
4
4
COLLECTOR
LEVEL
7
7
7
6
5
4
ROLLING
10
9
8
7
6
5
LOCAL
LEVEL
8
7
7
6
5
ROLLING
11
10
9
8
6