(Percent of mileage in roadway class)
|Other principal arterials||12.1||10.6||12.0||7.3||6.5||6.1||4.5||4.0||3.7|
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.