(Percent of mileage in roadway class)
|Other freeways and expressway||13.2||18.0||14.6||12.1||12.0||12.0||10.6||10.9||10.2|
|Other principal arterials||22.5||28.8||27.1||25.9||26.7||31.3||30.6||30.0||29.3|
NOTES: Because of the transition to a new indicator for pavement condition beginning with U.S. Department of Transportation, Federal Highway Administration (FHWA) data published in 1993, comparisons between pre-1993 data and 1993 and later data are difficult. Data are for the 50 states and the District of Columbia.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 2002 (Washington, DC: 2002), table 1-26, also available at http://www.bts.gov/, as of April 2003.