Figure 1: Percent of Bridges by Highway Type,,
,Number,"Number of Bridges 
% by Total Number"
Rural,,
Interstate,"27,648",4.7%
Other Arterial,"76,456",12.9%
Collector,"143,470",24.1%
Local,"208,641",35.1%
Total Rural,"456,215",76.8%
Urban,,
Interstate,"27,929",4.7%
Other Arterial,"66,443",11.2%
Collector,"15,548",2.6%
Local,"27,940",4.7%
Total Urban,"137,860",23.2%
"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 ",,