Figure 1-2: Urban Road Conditions in South Dakota: 2000

Figure 1-2: Urban Road Conditions in South Dakota: 2000

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(Miles)

  Interstate Other freeways and expressways Other principal arterial Urban minor arterial Urban collector
Total 49 0 21 N N
Very good 1 0 0 N N
Good 12 0 4 N N
Fair 6 0 13 N N
Mediocre 26 0 3 N N
Poor 4 0 1 N N

(Percent)

  Interstate Other freeways and expressways Other principal arterial Urban minor arterial Urban collector
Total 100 0 100 N N
Very good 2 0 0 N N
Good 24 0 19 N N
Fair 12 0 62 N N
Mediocre 53 0 14 N N
Poor 8 0 5 N 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.