Figure 3: Bridges by Year Built

Figure 3: Bridges by Year Built

As of December 2006

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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