Figure 2: Percent of Average Daily Traffic on Bridges by Highway Type

Figure 2: Percent of Average Daily Traffic on Bridges by Highway Type

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  Number ADT on Bridges % by Total ADT
Rural    
Interstate 27,648 10.6%
Other Arterial 76,456 10.5%
Collector 143,470 4.6%
Local 208,641 1.6%
Total Rural 456,215 27.4%
Urban    
Interstate 27,929 34.7%
Other Arterial 66,443 33.3%
Collector 15,548 2.3%
Local 27,940 2.3%
Total Urban 137,860 72.6%

NOTE: Percentages include the 50 U.S. states, the District of Columbia, and Puerto Rico.

SOURCE: U.S. Department of Transportation, Federal Highway Administration, 2006 Status of the Nation's Highways, Bridges, and Transit: Conditions and Performance, Exhibit 2-16, p. 2-20, available at http://www.fhwa.dot.gov/policy/2006cpr/pdfs/chap2.pdf