Table 1-3: South Dakota Road Condition by Functional System - Rural

Table 1-3: South Dakota Road Condition by Functional System - Rural

(Miles)

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  1995 1996 1997 1998 1999 2000
Interstate (total reported) 629 629 615 605 626 629
Very good 5 68 9 0 2 32
Good 133 119 171 199 262 324
Fair 159 151 136 175 210 147
Mediocre 303 262 250 195 140 108
Poor 29 29 49 36 12 18
Not reported 0 0 13 23 2 0
Other principal arterial (total reported) 2,494 2,489 2,250 2,426 2,398 2,389
Very good 178 305 9 26 34 80
Good 355 323 465 481 530 566
Fair 1,583 1,554 1,481 1,557 1,463 1,345
Mediocre 356 287 190 304 268 305
Poor 22 20 105 58 103 93
Not reported 47 53 291 114 143 151
Minor arterial (total reported) 3,310 3,325 3,166 3,268 3,175 3,181
Very good 234 314 48 0 16 57
Good 393 393 886 686 756 679
Fair 2,112 2,010 1,824 2,157 2,090 2,039
Mediocre 481 516 337 376 308 354
Poor 90 92 71 49 5 52
Not reported 34 15 176 83 174 170
Major collector (total reported) N N N N N N
Very good N N N N N N
Good N N N N N N
Fair N N N N N N
Mediocre N N N N N N
Poor N N N N N N
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 rural major 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.