Table 1-6: Estimated U.S. Roadway Lane-Miles by Functional Systema

Table 1-6: Estimated U.S. Roadway Lane-Miles by Functional Systema

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  1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 R,d1998 R1999 2000
TOTAL lane-miles7,922,174 8,017,994 8,051,081 8,087,793 8,124,090 8,132,196 8,143,014 8,158,253 8,178,654 R8,242,437 8,160,858 8,177,983 8,223,393
Urban                         
Interstates 48,458 57,295 62,214 62,826 67,266 69,184 70,832 71,377 71,790 R72,257 73,006 73,293 73,915
Other arterialsb 333,673 371,649 399,376 402,360 418,208 435,386 442,474 445,828 449,480 R453,623 454,060 450,411 455,857
Collectors 145,128 162,377 167,770 165,288 176,137 179,653 183,353 185,032 186,923 R188,850 187,533 186,334 188,568
Local 867,986 951,018 1,041,136 1,052,278 1,097,120 1,119,552 1,129,218 1,137,870 1,149,456 R1,167,946 1,177,009 1,185,948 1,196,840
Total 1,395,245 1,542,339 1,670,496 1,682,752 1,758,731 1,803,775 1,825,877 1,840,107 1,857,649 R1,882,676 1,891,608 1,895,986 1,915,180
Rural                         
Interstates 130,980 131,907 135,871 136,503 133,467 132,138 131,266 131,916 132,963 133,165 133,231 134,198 134,587
Other arterialsb 507,098 510,005 517,342 517,813 526,714 525,906 529,818 530,706 532,856 R536,989 537,993 539,293 539,918
Collectorsc 1,431,267 1,466,789 1,467,602 1,467,561 1,441,466 1,434,473 1,432,189 1,417,428 1,416,662 R1,418,637 1,415,774 1,413,953 1,414,665
Local 4,457,584 4,366,954 4,259,770 4,283,164 4,263,712 4,235,904 4,223,864 4,238,096 4,238,524 R4,270,970 4,182,252 4,194,553 4,219,043
Total 6,526,929 6,475,655 6,380,585 6,405,041 6,365,359 6,328,421 6,317,137 6,318,146 6,321,005 R6,359,761 6,269,250 6,281,997 6,308,213

KEY: R = revised.

a Includes the 50 States and the District of Columbia.

b For urban: the sum of other freeways and expressways, other principal arterials, and minor arterials. For rural: the sum of other principal arterials and minor arterials.

c Includes minor and major collectors.

d Beginning in 1998, approximately 86,000 lane-miles of Bureau of Land Management roads are excluded.

NOTE: In estimating rural and urban lane mileage, the U.S. Department of Transportation, Federal Highway Administration assumed that rural minor collectors and urban/rural local roads are two lanes wide.

SOURCES: 1980-95: U.S. Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished).

1996-1998, 2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table HM-60. Internet address www.fhwa.dot.gov/ohim.ohimstat.htm as of Dec. 27, 2001.

1999: Ibid., personal communication, June 5, 2002.