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

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

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(Miles)

  Interstate Other Principal Arterial Minor Arterial Major Collector
Total 1,134 2,616 2,989 37
Very good 354 322 374 0
Good 501 1,549 1,608 0
Fair 123 688 919 37
Mediocre 144 48 88 0
Poor 12 9 0 0

(Percent)

  Interstate Other principal arterial Minor arterial Major collector
Total 1,134 2,616 2,989 37
Very good 31 12 13 0
Good 44 59 54 0
Fair 11 26 31 100
Mediocre 13 2 3 0
Poor 1 0 0 0

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: 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.