2-3 Condition of U.S. Highway Bridges: 2000-2010
2-3 Condition of U.S. Highway Bridges: 2000-2010
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Notes: Structurally Deficient and Functionally Obsolete are defined in the Glossary.
Sources: 2000-U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics; based on data from Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory (NBI), personal communication, Aug. 14, 2001. 2001-2010-U.S. Department of Transportation, Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory (NBI), Count of Bridges by Highway System, available at http://www.fhwa.dot.gov/bridge/britab.htm as of Aug. 18, 2011.