Table 1: Number of Highway Bridges by Owner, 1996-2006

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Owner 1996 1998 2000 2002 2004 2006
Federal 6,250 7,452 8,010 9,049 8,425 8,355
State 273,247 274,263 277,076 280,216 282,527 284,668
Local 299,125 298,280 298,791 299,275 300,385 301,912
Private/railroad 2,382 2,283 2,275 1,501 1,479 1,490
Unknown/unclassified 484 441 415 400 397 375
Total 581,488 582,719 586,567 590,441 593,213 596,800

NOTE: Numbers include the 50 U.S. states, the District of Columbia, and Puerto Rico.

SOURCE: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory, Highway Bridges by Owner, various years. http://www.fhwa.dot.gov/bridge/owner.htm as of Aug. 14, 2007.




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