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

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

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  1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 d1998 1999 2000 2001
TOTAL lane-kilometers 12,749,503 12,903,711 12,956,959 13,016,041 13,074,455 13,087,501 13,104,911 13,129,436 13,162,268 13,264,917 13,133,628 13,161,188 13,234,268 13,280,060
Urban, total 2,245,429 2,482,154 2,688,403 2,708,127 2,830,403 2,902,894 2,938,464 2,961,365 2,989,596 3,029,873 3,044,248 3,051,294 3,082,183 3,165,655
Interstates 77,986 92,207 100,124 101,109 108,254 111,341 113,993 114,870 115,535 116,286 117,492 117,954 118,955 119,837
Other arterialsb 536,995 598,111 642,733 647,536 673,041 700,686 712,093 717,491 723,368 730,035 730,739 724,866 733,631 736,383
Collectors 233,561 261,320 270,000 266,005 283,465 289,123 295,078 297,780 300,823 303,925 301,805 299,876 303,471 305,032
Local 1,396,888 1,530,515 1,675,546 1,693,477 1,765,643 1,801,744 1,817,300 1,831,224 1,849,870 1,879,627 1,894,212 1,908,598 1,926,127 2,004,404
Rural, total 10,504,074 10,421,557 10,268,556 10,307,914 10,244,052 10,184,606 10,166,447 10,168,070 10,172,671 10,235,043 10,089,380 10,109,894 10,152,085 10,114,405
Interstates 210,792 212,284 218,663 219,680 214,794 212,655 211,252 212,298 213,983 214,308 214,415 215,971 216,597 216,679
Other arterialsb 816,095 820,773 832,581 833,339 847,664 846,364 852,659 854,089 857,549 864,200 865,816 867,908 868,914 872,807
Collectorsc 2,303,401 2,360,568 2,361,876 2,361,810 2,319,815 2,308,561 2,304,885 2,281,129 2,279,896 2,283,075 2,278,467 2,275,537 2,276,683 2,275,862
Local 7,173,786 7,027,931 6,855,435 6,893,084 6,861,779 6,817,027 6,797,650 6,820,554 6,821,243 6,873,460 6,730,682 6,750,479 6,789,892 6,749,058

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 138,400 lane-kilometers of Bureau of Land Management roads are excluded.

NOTES

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

1.609344 kilometers = 1 mile.

SOURCES

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Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished).

1996-2001: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table HM-60. Internet address www.fhwa.dot.gov/ohim.ohimstat.htm as of December 2002.