Number of bridges
| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total all bridges | 582,976 | 585,542 | 589,674 | 589,685 | 590,887 | 591,940 | 593,813 | 595,363 | 597,340 | 599,766 | 601,396 |
| Urban | 128,312 | 130,339 | 133,384 | 133,401 | 135,339 | 135,415 | 137,598 | 142,408 | 146,041 | 151,171 | 153,407 |
| Rural | 454,664 | 455,203 | 456,290 | 456,284 | 455,548 | 456,525 | 456,215 | 452,955 | 451,299 | 448,595 | 447,989 |
| Structurally deficient bridges, total | 93,072 | 88,150 | 86,678 | 83,595 | 81,261 | 79,775 | 77,752 | 75,923 | 73,784 | 72,520 | 71,461 |
| Urban | 14,073 | 12,967 | 13,079 | 12,705 | 12,503 | 12,316 | 12,175 | 12,600 | 12,585 | 12,951 | 12,896 |
| Rural | 78,999 | 75,183 | 73,599 | 70,890 | 68,758 | 67,459 | 65,577 | 63,323 | 61,199 | 59,569 | 58,565 |
| Functionally obsolete bridges, total | 79,500 | 81,900 | 81,510 | 81,439 | 81,537 | 80,990 | 80,567 | 80,412 | 80,317 | 79,804 | 79,933 |
| Urban | 27,588 | 29,065 | 29,398 | 29,383 | 29,675 | 29,886 | 30,298 | 31,391 | 32,292 | 33,139 | 33,691 |
| Rural | 51,912 | 52,835 | 52,112 | 52,056 | 51,862 | 51,104 | 50,269 | 49,021 | 48,025 | 46,665 | 46,242 |
NOTES: Data for 2000 are as of August of that year; data for 2001 are as of December of that year; data for 200206 are as of July of those years; data for 200708 are as of December of those years. Definitions for the terms Structurally deficient and Functionally obsolete can be found on pages 14 and 15 in Chapter 3 of the Federal Highway Administration, 2006 Conditions and Performance Report available at http://www.fhwa.dot.gov/policy/2006cpr/pdfs/chap3.pdf. U.S. totals include the 50 states, the District of Columbia, and Puerto Rico.
Table includes: rural-interstate, principal arterial, minor arterial, major collector, and local roads; urban-interstate, other freeways or expressways, other principal arterial, minor arterial, collector, and local roads.
SOURCES: 19982000: 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 Database, personal communication, Aug. 14, 2001. 20012008: 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 Database, Count of Bridges by Highway System, available at http://www.fhwa.dot.gov/bridge/britab.htm as of Sept. 24 2009 as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-27, available at http://www.bts.gov/publications/national_transportation_statistics/ as of October 2009.