Percentage of mileage in roadway class
|Interstates||Other principal arterials||Minor arterials||Collectors||Interstates||Other freeways
|Other principal arterials||Minor arterials||Collectors|
NOTES: Data are for the 50 states and the District of Columbia. The terms poor and mediocre as used here are Federal Highway Administration (FHWA) pavement condition criteria term categories for quantitative International Roughness Index and Present Serviceability Ratings. For additional information, see U.S. Department of Transportation, Federal Highway Administration, Status of the Nations Highways, Bridges, and Transit: 2002 Conditions and Performance Report, exhibit 3-3, available at http://www.fhwa.dot.gov/policy as of August 2005.
SOURCE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual Issues), tables HM-63 and HM-64 as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-26, available at http://www.bts.gov/publications/national_transportation_statistics/ as of October 2010.