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

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

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  1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
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 13,235,639 13,280,089 13,349,784 13,381,890 13,420,032 13,472,974 13,551,624 13,610,790 13,653,625 13,747,278
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 3,082,703 3,165,650 3,229,046 3,393,543 3,539,197 3,642,525 3,715,335 3,772,074 3,849,593 3,931,200
Interstate 77,986 92,207 100,124 101,109 108,254 111,341 113,993 114,870 115,535 116,286 117,492 117,954 118,950 119,867 120,873 128,089 133,456 138,381 141,532 143,666 146,069 146,368
Other arterialb 536,995 598,111 642,733 647,536 673,041 700,686 712,093 717,491 723,368 730,035 730,739 724,866 734,152 736,347 744,893 779,198 813,247 843,036 857,673 869,350 888,965 915,059
Collectorc 233,561 261,320 270,000 266,005 283,465 289,123 295,078 297,780 300,823 303,925 301,805 299,876 303,474 305,032 307,132 333,707 350,274 362,984 373,131 376,350 390,612 406,331
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 2,056,148 2,152,549 2,242,220 2,298,124 2,342,999 2,382,708 2,423,947 2,463,442
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 10,152,936 10,114,439 10,120,738 9,988,347 9,880,835 9,830,449 9,836,290 9,838,716 9,804,032 9,816,078
Interstate 210,792 212,284 218,663 219,680 214,794 212,655 211,252 212,298 213,983 214,308 214,415 215,971 216,597 216,713 216,569 209,833 205,817 202,076 200,170 198,773 197,668 196,144
Other arterialb 816,095 820,773 832,581 833,339 847,664 846,364 852,659 854,089 857,549 864,200 865,816 867,908 869,781 872,807 875,501 859,837 856,243 852,236 853,147 853,718 853,928 864,848
Collectorc 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 2,276,686 2,275,862 2,267,167 2,234,598 2,222,041 2,210,189 2,202,341 2,203,997 2,198,491 2,219,178
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 6,789,872 6,749,058 6,761,501 6,684,079 6,596,733 6,565,948 6,580,632 6,582,228 6,553,946 6,535,908

a Includes the 50 States and the District of Columbia.

b Urban other arterial includes other freeways and expressways, other principal arterial, and minor arterial. Rural other arterial includes other principal arterial and minor arterial prior to 2009 and other freeways and expressways, other principal arterial and minor arterial for 2009.

c Collector is the sum of major and minor collectors.

NOTES

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

1.609344 kilometer = 1 mile.

2009 data exclude 1,325 kilometers of federal agency owned roads and 114 kilometers of other non federal agency owned roads. 2008 data exclude 1,268 kilometers of federal agency owned roads. 2007 data exclude 1,268 kilometers of federal owned roads and 703 kilometers of local government owned roads. 2006 data exclude 1,268 kilometers of federal owned roads and include 441 kilometers of miscoded roads. 2005 data exclude 1,239 kilometers of federal agency owned roads.

SOURCES

1980-95: U.S. Department of Transportation, Federal Highway Administration, Office of Highway Information Management, Highway Statistics Summary to 1995 (Washington, DC), table HM-260, available at http://www.fhwa.dot.gov/policy/ohpi/hss/hsspubs.cfm as of Mar. 11, 2011.

1996-2009: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual Issues), table HM-60, available at http://www.fhwa.dot.gov/policy/ohpi/hss/hsspubs.cfm as of Mar. 11, 2011.