Figure 1-1: Rural Road Conditions in South Dakota: 2000

Figure 1-1: Rural Road Conditions in South Dakota: 2000

Excel | CSV | Graphic Version

(Miles)

  Interstate Other principal arterial Minor arterial Major collector
Total 629 2,389 3,181 N
Very good 32 80 57 N
Good 324 566 679 N
Fair 147 1,345 2,039 N
Mediocre 108 305 354 N
Poor 18 93 52 N

(Percent)

  Interstate Other principal arterial Minor arterial Major collector
Total 100 100 100 N
Very good 5 3 2 N
Good 52 24 21 N
Fair 23 56 64 N
Mediocre 17 13 11 N
Poor 3 4 2 N

NOTE: Numbers may not add to 100 due to rounding.

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.