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

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

Number

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  Structurally deficient Functionally obsolete All urban bridges
Interstates 1,715 5,617 27,924
Other freeways or expressways 1,025 3,431 16,843
Other principal arterials 2,273 5,428 24,300
Minor arterials 2,605 6,402 24,510
Collectors 1,739 3,783 15,166
Local roads 3,147 5,014 26,594
Total 12,504 29,675 135,337

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.