Figure 5: Number of Highway Bridges Categorized as
Structurally Deficient, 1992-2006
Excel | CSV | Graphic Version
| 1992 |
118.70 |
| 1993 |
111.51 |
| 1994 |
107.48 |
| 1995 |
103.92 |
| 1996 |
101.52 |
| 1997 |
98.48 |
| 1998 |
93.08 |
| 1999 |
88.15 |
| 2000 |
86.69 |
| 2001 |
83.63 |
| 2002 |
81.44 |
| 2003 |
79.81 |
| 2004 |
77.76 |
| 2005 |
75.87 |
| 2006 |
73.76 |
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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