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