Table 1-6M: Estimated U.S. Roadway Lane-Kilometers by Functional Systema
Table 1-6M: Estimated U.S. Roadway Lane-Kilometers by Functional Systema
1980 | 1985 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | R,d1998 | R1999 | 2000 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | R13,264,917 | 13,133,628 | 13,161,180 | 13,234,268 |
Urban | |||||||||||||
Interstates | 77,986 | 92,207 | 100,124 | 101,109 | 108,254 | 111,341 | 113,993 | 114,870 | 115,535 | R116,286 | 117,492 | 117,957 | 118,955 |
Other arterialsb | 536,995 | 598,111 | 642,733 | 647,536 | 673,041 | 700,686 | 712,093 | 717,491 | 723,368 | R730,035 | 730,739 | 724,741 | 733,631 |
Collectors | 233,561 | 261,320 | 270,000 | 266,005 | 283,465 | 289,123 | 295,078 | 297,780 | 300,823 | R303,925 | 301,805 | 299,898 | 303,471 |
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 | R1,879,627 | 1,894,212 | 1,908,606 | 1,926,127 |
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 | R3,029,873 | 3,044,248 | 3,051,202 | 3,082,183 |
Rural | |||||||||||||
Interstates | 210,792 | 212,284 | 218,663 | 219,680 | 214,794 | 212,655 | 211,252 | 212,298 | 213,983 | 214,308 | 214,415 | 215,974 | 216,597 |
Other arterialsb | 816,095 | 820,773 | 832,581 | 833,339 | 847,664 | 846,364 | 852,659 | 854,089 | 857,549 | R864,200 | 865,816 | 867,977 | 868,914 |
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 | R2,283,075 | 2,278,467 | 2,275,643 | 2,276,683 |
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 | R6,873,460 | 6,730,682 | 6,750,384 | 6,789,892 |
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 | R10,235,043 | 10,089,380 | 10,109,978 | 16,338,197 |
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 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.
Numbers may differ slightly from previous year's metric tables because a higher precision conversion factor was used.
SOURCES: 1980-95: U.S. Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished).
1996-2000: Ibid., Highway Statistics (Washington, DC: Annual issues), table HM-60. Internet address www.fhwa.dot.gov/ohim.ohimstat.htm as of Dec. 27, 2001.