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