Figure 1-2: Urban Road Conditions in Iowa: 2000
Tuesday, January 3, 2012
Figure 1-2: Urban Road Conditions in Iowa: 2000
Excel | CSV | Graphic Version
(Miles)
| Interstate | Other Freeways & Expressways | Other Principal Arterial | Urban Minor Arterial | Urban Collector | |
|---|---|---|---|---|---|
| Total | 147 | 0 | 631 | 85 | 5 |
| Very good | 4 | 0 | 17 | 4 | 2 |
| Good | 44 | 0 | 134 | 19 | 1 |
| Fair | 36 | 0 | 290 | 39 | 0 |
| Mediocre | 47 | 0 | 93 | 13 | 2 |
| Poor | 16 | 0 | 97 | 10 | 0 |
(Percent)
| Interstate | Other Freeways & Expressways | Other Principal Arterial | Urban Minor Arterial | Urban Collector | |
|---|---|---|---|---|---|
| Total | 100 | 0 | 100 | 100 | 100 |
| Very good | 3 | 0 | 3 | 5 | 40 |
| Good | 30 | 0 | 21 | 22 | 20 |
| Fair | 24 | 0 | 46 | 46 | 0 |
| Mediocre | 32 | 0 | 15 | 15 | 40 |
| Poor | 11 | 0 | 15 | 12 | 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.