Figure 6: Percentages of Highway Bridges with Deficiencies by Highway Type in 2006
Figure 6: Percentages of Highway Bridges with Deficiencies by Highway Type in 2006
Excel | CSV | Graphic Version
| Percent Structurally Deficient | Functionally Obsolete | |
|---|---|---|
| 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.