Figure 1 - Trends in Lane-Miles of Roadway by Functional Class: 1980-2000

Figure 1 - Trends in Lane-Miles of Roadway by Functional Class: 1980-2000

(Index: 1980 = 100)

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Year Interstates Other principal arterials Minor arterials Collectors Local Total
1980 100 100 100 100 100 100
1981 98 97 97 99 100 99
1982 102 102 103 104 100 101
1983 104 104 104 104 101 102
1984 105 105 104 103 101 102
1985 105 105 104 103 100 101
1986 106 106 106 103 100 102
1987 108 108 107 104 100 102
1988 109 109 107 104 100 102
1989 110 110 106 104 100 102
1990 110 113 106 104 100 102
1991 111 116 104 104 100 102
1992 112 121 106 103 101 103
1993 112 122 108 102 101 103
1994 113 124 109 102 101 103
1995 113 125 109 102 101 103
1996 114 126 110 102 101 103
1997 114 127 111 102 102 104
1998 115 128 110 102 101 103
1999 116 128 109 102 101 103
2000 116 129 110 102 102 104

SOURCES: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual editions), table HM-60.