Table 1-3 - Highway Bridge Conditions: 1990 and 1997
Monday, September 10, 2012
Table 1-3 - Highway Bridge Conditions: 1990 and 1997
| Functional category | 1990 | 1997 | ||||||
|---|---|---|---|---|---|---|---|---|
| Percentage structurally deficient | Percentage functionally obsolete | Percentage in good condition | Total bridges | Percentage structurally deficient | Percentage functionally obsolete | Percentage in good condition | Total bridges | |
| RURAL | ||||||||
| Principal arterials-- Interstates | 5.2 | 20.9 | 73.9 | 29,076 | 4.5 | 12.2 | 83.3 | 28,073 |
| Principal arterials-- Other | 8.4 | 14.9 | 76.7 | 32,169 | 7.0 | 10.7 | 82.3 | 34,813 |
| Minor arterials | 14.1 | 14.5 | 71.3 | 40,927 | 10.4 | 11.8 | 77.9 | 38,401 |
| Major collectors | 19.5 | 13.3 | 67.2 | 103,979 | 13.4 | 10.4 | 76.2 | 95,751 |
| Minor collectors | 23.2 | 16.0 | 60.8 | 48,797 | 17.0 | 10.9 | 72.1 | 47,390 |
| Local roads | 38.1 | 15.2 | 46.7 | 208,487 | 26.1 | 11.3 | 62.6 | 210,678 |
| Total rural | 26.1 | 15.1 | 58.8 | 463,435 | 18.4 | 11.1 | 70.5 | 455,106 |
| URBAN | ||||||||
| Principal arterials-- Interstates | 9.9 | 30.2 | 60.0 | 24,435 | 7.4 | 19.4 | 73.2 | 27,142 |
| Principal arterials-- other freeways/expressways | 9.2 | 32.0 | 58.8 | 11,890 | 7.0 | 20.1 | 72.9 | 15,170 |
| Other principal arterials | 15.9 | 27.0 | 57.1 | 21,403 | 11.9 | 21.7 | 66.4 | 23,297 |
| Major arterials | 17.4 | 29.0 | 53.7 | 18,580 | 13.4 | 25.3 | 61.3 | 23,300 |
| Collectors | 20.2 | 29.0 | 50.8 | 11,876 | 15.2 | 23.4 | 61.4 | 14,939 |
| Local roads | 21.0 | 21.7 | 57.3 | 20,586 | 15.1 | 17.6 | 67.3 | 24,780 |
| Total urban | 15.5 | 27.8 | 56.7 | 108,770 | 11.6 | 21.0 | 67.3 | 127,628 |
| URBAN AND RURAL | 24.1 | 17.5 | 58.4 | 572,205 | 16.9 | 13.3 | 69.8 | 582,734 |
SOURCE: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory Database, 1998.