Table 1-4: Idaho Road Condition by Functional System -- Urban

Table 1-4: Idaho Road Condition by Functional System -- Urban

(Miles)

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  1995 1996 1997 1998 1999 2000
Interstate (total reported) 81 79 83 85 85 86
Very good 0 20 18 17 25 32
Good 24 26 35 36 29 33
Fair 31 17 10 8 9 8
Mediocre 24 15 19 23 17 7
Poor 2 1 1 1 5 6
Not reported 0 0 0 0 0 0
Other freeways and expressways (total reported) 0 0 0 0 0 0
Very good 0 0 0 0 0 0
Good 0 0 0 0 0 0
Fair 0 0 0 0 0 0
Mediocre 0 0 0 0 0 0
Poor 0 0 0 0 0 0
Not reported 0 0 0 0 0 0
Other principal arterial (total reported) 222 222 225 240 257 257
Very good 0 12 6 8 15 9
Good 9 39 38 42 43 46
Fair 81 85 112 116 127 133
Mediocre 107 75 50 52 47 45
Poor 25 11 19 22 25 24
Not reported 0 0 9 18 4 5
Urban minor arterial (total reported) N N N N N 59
Very good N N N N N 0
Good N N N N N 14
Fair N N N N N 38
Mediocre N N N N N 1
Poor N N N N N 6
Not reported N N N N N N
Urban collector (total reported) N N N N N 3
Very good N N N N N 0
Good N N N N N 0
Fair N N N N N 0
Mediocre N N N N N 3
Poor N N N N N 0
Not reported N N N N N N

KEY: N = data do not exist.

NOTE: In 2000, the Federal Highway Administration began reporting road condition for urban minor arterials and urban collectors using the International Roughness Index, if available. In prior years, data were only available using the Present Serviceability Rating.

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.