Figure 1-2: Urban Road Conditions in Idaho: 2000

Figure 1-2: Urban Road Conditions in Idaho: 2000

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(Miles)

  Interstate Other freeways and expressways Other principal arterial Urban minor arterial Urban collector
Total 86 0 257 59 3
Very good 32 0 9 0 0
Good 33 0 46 14 0
Fair 8 0 133 38 0
Mediocre 7 0 45 1 3
Poor 6 0 24 6 0

(Percent)

  Interstate Other freeways and expressways Other principal arterial Urban minor arterial Urban collector
Total 100 0 100 100 100
Very good 37 0 4 0 0
Good 38 0 18 24 0
Fair 9 0 52 64 0
Mediocre 8 0 18 2 100
Poor 7 0 9 10 0

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.