Figure 1-2: Urban Road Conditions in Michigan: 2000
Tuesday, January 3, 2012
Figure 1-2: Urban Road Conditions in Michigan: 2000
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(Miles)
| Interstate | Other Freeways & Expressways | Other Principal Arterial | Urban Minor Arterial | Urban Collector | |
|---|---|---|---|---|---|
| Total | 499 | 225 | 1,973 | 517 | 39 |
| Very good | 20 | 8 | 12 | 22 | 0 |
| Good | 180 | 35 | 106 | 70 | 0 |
| Fair | 107 | 141 | 742 | 254 | 7 |
| Mediocre | 143 | 33 | 540 | 125 | 3 |
| Poor | 49 | 8 | 573 | 46 | 29 |
(Percent)
| Interstate | Other Freeways & Expressways | Other Principal Arterial | Urban Minor Arterial | Urban Collector | |
|---|---|---|---|---|---|
| Total | 100 | 100 | 100 | 100 | 100 |
| Very good | 4 | 4 | 1 | 4 | 0 |
| Good | 36 | 16 | 5 | 14 | 0 |
| Fair | 21 | 63 | 38 | 49 | 18 |
| Mediocre | 29 | 15 | 27 | 24 | 8 |
| Poor | 10 | 4 | 29 | 9 | 74 |
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.