Figure 1-1: Rural Road Conditions in Illinois: 2000
Tuesday, January 3, 2012
Figure 1-1: Rural Road Conditions in Illinois: 2000
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(Miles)
| Interstate | Other Principal Arterial | Minor Arterial | Major Collector | |
|---|---|---|---|---|
| Total | 1,515 | 2,613 | 4,822 | N |
| Very good | 99 | 94 | 403 | N |
| Good | 798 | 911 | 1,167 | N |
| Fair | 330 | 1,389 | 2,825 | N |
| Mediocre | 280 | 187 | 217 | N |
| Poor | 8 | 32 | 210 | N |
(Percent)
| Interstate | Other principal arterial | Minor arterial | Major collector | |
|---|---|---|---|---|
| Total | 100 | 100 | 100 | N |
| Very good | 7 | 4 | 8 | N |
| Good | 53 | 35 | 24 | N |
| Fair | 22 | 53 | 59 | N |
| Mediocre | 18 | 7 | 5 | N |
| Poor | 1 | 1 | 4 | N |
KEY: N = Data do not exist
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.