Table 1-6. Estimated U.S. Roadway Lane-Miles by Functional System

Wednesday, November 21, 2012

	1980	1985	1990	1991	1992	1993	1994	1995	1996	1997^R	1998^R	1999
Urban
Interstates	48,458	57,295	62,214	62,826	67,266	69,184	70,832	71,377	71,790	^R72,966	73,729	74,038
Other arterials	333,673	371,649	399,376	402,360	418,208	435,386	442,474	445,828	449,480	^R455,872	456,333	452,627
Collectors	145,128	162,377	167,770	165,288	176,137	179,653	183,353	185,032	186,923	^R190,153	188,852	187,612
Local	867,986	951,018	1,041,136	1,052,278	1,097,120	1,119,552	1,129,218	1,137,870	1,149,456	^R1,178,928	1,188,015	1,197,026
Total	1,395,245	1,542,339	1,670,496	1,682,752	1,758,731	1,803,775	1,825,877	1,840,107	1,857,649	^R1,897,919	1,906,924	1,911,303
Rural
Interstates	130,980	131,907	135,871	136,503	133,467	132,138	131,266	131,916	132,963	^R133,165	133,640	134,611
Other arterials	507,098	510,005	517,342	517,813	526,714	525,906	529,818	530,706	532,856	^R537,870	538,875	540,208
Collectors^a	1,431,267	1,466,789	1,467,602	1,467,561	1,441,466	1,434,473	1,432,189	1,417,428	1,416,662	^R1,421,568	1,418,733	1,416,962
Local	4,457,584	4,366,954	4,259,770	4,283,164	4,263,712	4,235,904	4,223,864	4,238,096	4,238,524	^R4,282,216	4,193,555	4,205,960
Total	6,526,929	6,475,655	6,380,585	6,405,041	6,365,359	6,328,421	6,317,137	6,318,146	6,321,005	^R6,375,228	6,284,803	6,297,741
TOTAL lane-miles	7,922,174	8,017,994	8,051,081	8,087,793	8,124,090	8,132,196	8,143,014	8,158,253	8,178,654	^R8,273,147	8,191,732	8,209,044

^{a Includes the 50 States, the District of Columbia, and Puerto Rico}
^{b Includes minor and major collectors.}

^{KEY: R = revised}

NOTE: In estimating rural and urban lane mileage, the U.S. Department of Transportation, Federal Highway Administration assumed that rural minor collectors and urban/rural local roads are two lanes wide. SOURCES: 1980-95: U.S. Department of Transportation, Federal Highway Administration, Office of Highway Information Management, table HM-260 (unpublished). 1996: Ibid. Highway Statistics (Washington, DC: Annual issues), table HM-60. 1997-99: Ibid. Internet site www.fhwa.dot.gov/ohim.ohimstat.htm, as of Nov. 15,2000

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Table 1-6. Estimated U.S. Roadway Lane-Miles by Functional System

Table 1-6. Estimated U.S. Roadway Lane-Miles by Functional System