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TABLE L-9 Condition of U.S. Highway Bridges: 1995-2005

Number

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  1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
Urban deficient bridges, total 42,692 43,181 41,711 41,661 42,032 42,093 42,088 42,178 42,202 42,473 43,991
Structurally deficient 15,205 15,094 14,846 14,073 12,967 12,695 12,705 12,503 12,316 12,175 12,600
Functionally deficient 27,487 28,087 26,865 27,588 29,065 29,398 29,383 29,675 29,886 30,298 31,391
Urban bridges, total 122,537 124,950 127,633 128,312 130,339 133,384 133,401 135,339 135,415 137,598 142,408
Rural deficient bridges, total 142,575 139,545 134,174 130,911 128,018 122,993 122,946 120,620 118,563 115,846 112,344
Structurally deficient 89,112 86,424 83,629 78,999 75,183 70,881 70,890 68,758 67,459 65,577 63,323
Functionally deficient 53,463 53,121 50,545 51,912 52,835 52,112 52,056 51,862 51,104 50,269 49,021
Rural bridges, total 458,598 456,913 455,118 454,664 455,203 456,290 456,284 455,548 456,525 456,215 452,955
All deficient bridges, total 185,267 182,726 175,885 172,572 170,050 165,086 165,034 162,798 160,765 158,319 156,335
Structurally deficient 104,317 101,518 98,475 93,072 88,150 83,576 83,595 81,261 79,775 77,752 75,923
Functionally deficient 80,950 81,208 77,410 79,500 81,900 81,510 81,439 81,537 80,990 80,567 80,412
All bridges, total 581,135 581,863 582,751 582,976 585,542 589,674 589,685 590,887 591,940 593,813 595,363

NOTES: Structurally deficient refers to bridges needing significant maintenance attention, rehabilitation, or replacement. Functionally deficient refers to bridges that do not have the lane widths, shoulder widths, or vertical clearances adequate to serve traffic demand or bridges that may not be able to handle occasional roadway flooding.

SOURCES: 1995-2000-U.S. Department of Transportation, Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory Database, personal communication, August 14, 2001. 2001-2005- ibid, Count of Bridges by Highway System, available at http://www.fhwa.dot.gov/bridge/britab.htm as of November 2006.
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