Figure 1-1: Rural Road Conditions in California: 2000

Figure 1-1: Rural Road Conditions in California: 2000

Excel | CSV | Graphic Version

(Miles)

  Interstate Other Principal Arterial Minor Arterial Major Collector
Total 1,352 3,694 6,970 12,692
Very good 45 33 34 95
Good 539 1,021 1,202 2,882
Fair 347 2,472 4,195 5,890
Mediocre 314 161 1,189 2,005
Poor 107 7 350 1,820
Not reported 6 5 0 0

(Percent)

  Interstate Other Principal Arterial Minor Arterial Major Collector
Total 100 100 100 100
Very good 3 1 0 1
Good 40 28 17 23
Fair 26 67 60 46
Mediocre 23 4 17 16
Poor 8 0 5 14

NOTE FOR DATA ON THIS PAGE: Road condition is based on measured pavement roughness using the International Roughness Index (IRI). IRI is a measure of surface condition. A comprehensive measure of pavement condition would require data on other pavement distresses such as rutting, cracking, and faulting.

SOURCE FOR DATA ON THIS PAGE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics, Washington, DC: annual editions, tables HM-63 and HM-64, available at http://www.fhwa.dot.gov/ as of Feb. 1, 2002.