Figure 4: Percentage of Highway Bridges with Deficiencies, 1992-2006

Figure 4: Percentage of Highway Bridges with Deficiencies, 1992-2006

Excel | CSV | Graphic Version

Year % Structurally deficient % Functionally obsolete
1992 20.7% 14.0%
1993 19.4% 13.9%
1994 18.7% 13.9%
1995 17.8% 13.9%
1996 17.4% 14.0%
1997 16.9% 13.3%
1998 16.0% 13.6%
1999 15.1% 14.0%
2000 14.8% 13.8%
2001 14.2% 13.8%
2002 13.8% 13.8%
2003 13.5% 13.7%
2004 13.1% 13.6%
2005 12.8% 13.5%
2006 12.4% 13.4%

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.