2-3 Condition of U.S. Highway Bridges: 1990-2009

2-3 Condition of U.S. Highway Bridges: 1990-2009

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Mode 1990 2000 2008 2009
Total all bridges 572,205 589,674 601,396 603,259
Urban 108,770 133,384 153,407 156,305
Rural 463,435 456,290 447,989 446,954
Structurally deficient bridges, total 137,865 86,678 71,461 71,177
Urban 16,847 13,079 12,896 12,828
Rural 121,018 73,599 58,565 58,349
Functionally obsolete bridges, total 100,355 81,510 79,933 78,477
Urban 30,266 29,398 33,691 33,743
Rural 70,089 52,112 46,242 44,734

Notes: Explanations for the terms "structurally deficient" and "functionally obsolete" can be found on pages 14 and 15 in chapter 3 of the Federal Highway Administration's 2006 Conditions and Performance Report, available at http://www.fhwa.dot.gov/policy/2006cpr/pdfs/chap3.pdf as of October 2010.

U.S. totals include the 50 states, the District of Columbia, and Puerto Rico. Data include: Rural-Interstate, principal arterial, minor arterial, major collector, minor collector and local roads; urban-interstate, other freeways or expressways, other principal arterial, minor arterial, collector, and local roads.

Data are as of Decemberfor 1990, 2008 and 2009 of those years and as of August for the year 2000.

Sources: 1990 and 2000: U.S. Department of Transportation, Federal Highway Administration, Office of Bridge Technology, National Bridge Inventory (NBI), personal communications, August 2001 and April 2008. 2008 and 2009: Ibid., Count, Area, Length of Bridges by Highway System, available at http://www.fhwa.dot.gov/bridge/britab.htm as of April 2010 as reported 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 2010.