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

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

Excel | CSV

  1980 1985 1990 1995 1996 1997 R,d1998 R1999 2000
TOTAL lane-miles 12,749,503 12,903,711 12,956,959 13,129,436 13,162,268 13,264,917 13,133,628 13,161,188 13,234,268
Urban, total 2,245,429 2,482,154 2,688,403 2,961,365 2,989,596 3,029,873 3,044,248 3,051,294 3,082,183
Interstates 77,986 92,207 100,124 114,870 115,535 116,286 117,492 117,954 118,955
Other arterialsb 536,995 598,111 642,733 717,491 723,368 730,035 730,739 724,866 733,631
Collectors 233,561 261,320 270,000 297,780 300,823 303,925 301,805 299,876 303,471
Local 1,396,888 1,530,515 1,675,546 1,831,224 1,849,870 1,879,627 1,894,212 1,908,598 1,926,127
Rural, total 10,504,074 10,421,557 10,268,556 10,168,070 10,172,671 10,235,043 10,089,380 10,109,894 10,152,085
Interstates 210,792 212,284 218,663 212,298 213,983 214,308 214,415 215,971 216,597
Other arterialsb 816,095 820,773 832,581 854,089 857,549 864,200 865,816 867,908 868,914
Collectorsc 2,303,401 2,360,568 2,361,876 2,281,129 2,279,896 2,283,075 2,278,467 2,275,537 2,276,683
Local 7,173,786 7,027,931 6,855,435 6,820,554 6,821,243 6,873,460 6,730,682 6,750,479 6,789,892

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.

NOTE

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Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished).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.