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Figure 1-2: Urban Road Conditions in Illinois: 2000
Excel | CSV
| Graphic Version
(Miles)
| Total |
649 |
85 |
2,581 |
298 |
154 |
| Very good |
11 |
0 |
87 |
223 |
152 |
| Good |
218 |
4 |
666 |
0 |
0 |
| Fair |
222 |
48 |
1,329 |
17 |
2 |
| Mediocre |
157 |
25 |
371 |
17 |
0 |
| Poor |
41 |
8 |
128 |
41 |
0 |
(Percent)
| Total |
100 |
100 |
100 |
100 |
100 |
| Very good |
2 |
0 |
3 |
75 |
99 |
| Good |
34 |
5 |
26 |
0 |
0 |
| Fair |
34 |
56 |
51 |
6 |
1 |
| Mediocre |
24 |
29 |
14 |
6 |
0 |
| Poor |
6 |
9 |
5 |
14 |
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 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.
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