TABLE 11-7a Urban Bridge Condition by Functional Class: 2002

TABLE 11-7a Urban Bridge Condition by Functional Class: 2002

Percent

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  Structurally deficient Functionally obsolete
Interstates 6.1 20.1
Other freeways or expressways 6.1 20.4
Other principal arterials 9.4 22.3
Minor arterials 10.6 26.1
Collectors 11.5 24.9
Local roads 11.8 18.9

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

SOURCE: U.S. Department of Transportation, Federal Highway Administration, Office of Engineering, Bridge Division, National Bridge Inventory database, CD-ROM, June 23, 2003.