Figure 3: Bridges by Year Built,,,,,,,,,,,,,,,,,,,,,
As of December 2006,,,,,,,,,,,,,,,,,,,,,
Age,0-4,5-9,10-14,15-19,20-24,25-29,30-34,35-39,40-44,45-49,50-54,55-59,60-64,65-69,70-74,75-79,80-84,85-89,90-94,95-100,>100
Structurally Deficient,0,0,816,"1,246","1,460","2,014","3,456","5,129","6,184","7,447","5,450","5,553","1,783","7,130","6,546","6,049","2,794","2,995","1,718","2,053","3,871"
Functionally Obsolete,0,0,"3,337","4,134","3,344","3,082","4,461","6,985","9,889","9,858","6,763","5,155","1,348","4,786","4,844","4,386","2,322","1,617",888,804,"2,174"
No Deficiences,"25,554","37,954","35,641","38,020","34,643","31,671","34,946","39,799","39,245","33,334","20,586","15,453","4,045","15,070","13,034","11,243","4,136","2,562","1,106","1,022","3,873"
Total,"25,554","37,954","39,794","43,400","39,447","36,767","42,863","51,913","55,318","50,639","32,799","26,161","7,176","26,986","24,424","21,678","9,252","7,174","3,712","3,879","9,918"
"NOTE: Bridges that are both structurally deficient and fuctionally obsolete are classified as structurally deficient. 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, Bridge by Year Built, 2006, available at http://www.fhwa.dot.gov/bridge/structyr.htm as of Aug. 8, 2007",,,,,,,,,,,,,,,,,,,,,