Cross Section (Crown)

Numerical Rating

Verbal Rating

Description

3 Good No restriction to water flow from centerline to ditch; Little or no ponding on the road surface; Cross slope 3% or more; Superelevations as needed; good 'rooftop' shape.

2 Fair

Occasional restriction of water flow from centerline to ditches; Occasional ponding, particularly near the centerline; Cross slope 1% to 3%; Some instances of inadequate superelevations; Occasional longitudinal erosion due to inadequate crown; Some flattening of the crown, especially at the centerline.

1 Poor

Water does not flow from the road surface to the shoulders; Cross slope less than 1% or inverted; Generally inadequate superelevations; Longitudinal erosion due to lack of crown; Frequent ponding on the road surface.

NOTE: Description in italics is from the PASER Gravel manual

Numerical Rating

Verbal Rating Description

3 Good Roadway above the surrounding terrain; Good foreslopes, ditches and culverts that quickly carry water away from the road surface.

2 Fair

Roadway near the grade of the surrounding terrain; Marginal foreslopes, ditches and culverts; Secondary ditches; Occasional transverse erosion due to roadside drainage not carrying water away from the road surface.

1 Poor Roadway at or below the grade of the surrounding terrain; Few or no ditches; Runoff is forced onto the road surface, causing transverse and longitudinal erosion.

NOTE: The descriptions above typify roads with this quality drainage. Not all flaws will be apparent in every road in each category.

Roadside Drainage

1 2/12/2014 WTTC GH GRRS v 1.4

Cross Section (Crown) & Roadside Drainage

1 Poor: Cross Section

1 Poor: Roadside Drainage

2 2/12/2014 WTTC GH GRRS v 1.4

1 Poor: Cross Section

1 Poor: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

1 Poor: Cross Section

1 Poor: Roadside Drainage

3 2/12/2014 WTTC GH GRRS v 1.4

1 Poor: Cross Section

1 Poor: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

1 Poor: Cross Section

1 Poor: Roadside Drainage

1 Poor: Cross Section

1 Poor: Roadside Drainage

4 2/12/2014 WTTC GH GRRS v 1.4

Cross Section (Crown) & Roadside Drainage

5 2/12/2014 WTTC GH GRRS v 1.4

1 Poor: Cross Section

2 Fair: Roadside Drainage

1 Poor: Cross Section

2 Fair: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

6 2/12/2014 WTTC GH GRRS v 1.4

1 Poor: Cross Section

2 Fair: Roadside Drainage

1 Poor: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

1 Poor: Cross Section

3 Good: Roadside Drainage

7 2/12/2014 WTTC GH GRRS v 1.4

1 Poor: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

8 2/12/2014 WTTC GH GRRS v 1.4

2 Fair: Cross Section

1 Poor: Roadside Drainage

2 Fair: Cross Section

1 Poor: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

9 2/12/2014 WTTC GH GRRS v 1.4

2 Fair: Cross Section

2 Fair: Roadside Drainage

2 Fair: Cross Section

2 Fair: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

2 Fair: Cross Section

2 Fair: Roadside Drainage

10 2/12/2014 WTTC GH GRRS v 1.4

2 Fair: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

11 2/12/2014 WTTC GH GRRS v 1.4

2 Fair: Cross Section

3 Good: Roadside Drainage

2 Fair: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

3 Good: Cross Section

1 Poor: Roadside Drainage

12 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

1 Poor: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

3 Good: Cross Section

1 Poor: Roadside Drainage

3 Good: Cross Section

1 Poor: Roadside Drainage

13 2/12/2014 WTTC GH GRRS v 1.4

Cross Section (Crown) & Roadside Drainage

14 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

1 Poor: Roadside Drainage

3 Good: Cross Section

2 Fair: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

15 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

2 Fair: Roadside Drainage

3 Good: Cross Section

2 Fair: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

3 Good: Cross Section

3 Good: Roadside Drainage

16 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

17 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

3 Good: Roadside Drainage

3 Good: Cross Section

3 Good: Roadside Drainage

Cross Section (Crown) & Roadside Drainage

3 Good: Cross Section

3 Good: Roadside Drainage

18 2/12/2014 WTTC GH GRRS v 1.4

3 Good: Cross Section

3 Good: Roadside Drainage