Figure 1-1: Rural Road Conditions in South Dakota: 2000
Tuesday, January 3, 2012
Figure 1-1: Rural Road Conditions in South Dakota: 2000
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(Miles)
| Interstate | Other principal arterial | Minor arterial | Major collector | |
|---|---|---|---|---|
| Total | 629 | 2,389 | 3,181 | N |
| Very good | 32 | 80 | 57 | N |
| Good | 324 | 566 | 679 | N |
| Fair | 147 | 1,345 | 2,039 | N |
| Mediocre | 108 | 305 | 354 | N |
| Poor | 18 | 93 | 52 | N |
(Percent)
| Interstate | Other principal arterial | Minor arterial | Major collector | |
|---|---|---|---|---|
| Total | 100 | 100 | 100 | N |
| Very good | 5 | 3 | 2 | N |
| Good | 52 | 24 | 21 | N |
| Fair | 23 | 56 | 64 | N |
| Mediocre | 17 | 13 | 11 | N |
| Poor | 3 | 4 | 2 | 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.