Figure 4: Percentage of Highway Bridges with Deficiencies,
1992-2006
Excel | CSV | Graphic Version
| 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.
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