Figure 6: Percentages of Highway Bridges with Deficiencies by
Highway Type in 2006
Excel | CSV | Graphic Version
| Rural |
|
|
| Interstate |
4.3% |
11.1% |
| Other Arterial |
6.6% |
9.5% |
| Collector |
11.5% |
10.3% |
| Local |
18.7% |
11.3% |
| Total Rural |
13.6% |
10.6% |
| Urban |
|
|
| Interstate |
5.9% |
20.9% |
| Other Arterial |
8.2% |
23.0% |
| Collector |
10.9% |
25.3% |
| Local |
10.9% |
19.4% |
| Total Urban |
8.6% |
22.1% |
NOTE: Bridges that are both
structurally deficient and functionally obsolete are classified as
structurally deficient. Numbers
include the 50 U.S. states, the District of Columbia, and Puerto Rico.
SOURCES: U.S. Department of
Transportation, Federal Highway Administration, National Bridge Inventory,
Deficient Bridges by State and Highway System, various years, available at http://www.fhwa.dot.gov/bridge/britab.htm as of Aug. 14, 2007.
|
