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.