BTS | Table 1-6M: Estimated U.S. Roadway Lane-Kilometers by Functional System (a)

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

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	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 arterials^b	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 arterials^b	816,095	820,773	832,581	854,089	857,549	864,200	865,816	867,908	868,914
Collectors^c	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

^aIncludes the 50 states and the District of Columbia.

^bFor 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.

^cIncludes minor and major collectors.

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Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished).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

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

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