Table 1-6: Estimated U.S. Roadway Lane-Miles by Functional System (a)

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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 2010 2011 2012
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 8,242,437 8,160,858 8,177,983 8,224,245 8,251,865 8,295,171 8,315,121 8,338,821 8,371,718 8,420,589 8,457,353 8,483,969 8,542,163 8,581,158 8,567,618 8,606,003
Urban, 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 1,882,676 1,891,608 1,895,986 1,915,503 1,967,044 2,006,436 2,108,650 2,199,155 2,263,360 2,308,602 2,343,858 2,392,026 2,442,735 2,463,373 2,460,509 2,502,362
Interstate 48,458 57,295 62,214 62,826 67,266 69,184 70,832 71,377 71,790 72,257 73,006 73,293 73,912 74,482 75,107 79,591 82,926 85,986 87,944 89,270 90,763 90,949 92,302 92,714 94,096
Other arterialb 333,673 371,649 399,376 402,360 418,208 435,386 442,474 445,828 449,480 453,623 454,060 450,411 456,181 457,545 462,855 484,171 505,328 523,838 532,933 540,189 552,377 568,591 570,521 561,471 568,448
Collectorc 145,128 162,377 167,770 165,288 176,137 179,653 183,353 185,032 186,923 188,850 187,533 186,334 188,570 189,538 190,843 207,356 217,650 225,548 231,853 233,853 242,715 252,483 257,285 252,041 256,154
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 1,167,946 1,177,009 1,185,948 1,196,840 1,245,479 1,277,631 1,337,532 1,393,251 1,427,988 1,455,872 1,480,546 1,506,171 1,530,712 1,543,265 1,554,283 1,583,665
Rural, 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 6,359,761 6,269,250 6,281,997 6,308,742 6,284,821 6,288,735 6,206,471 6,139,666 6,108,358 6,111,987 6,113,495 6,091,943 6,099,428 6,117,785 6,107,109 6,103,641
Interstate 130,980 131,907 135,871 136,503 133,467 132,138 131,266 131,916 132,963 133,165 133,231 134,198 134,587 134,659 134,570 130,384 127,889 125,564 124,380 123,512 122,825 121,878 123,601 123,835 124,766
Other arterialb 507,098 510,005 517,342 517,813 526,714 525,906 529,818 530,706 532,856 536,989 537,993 539,293 540,457 542,337 544,011 534,278 532,045 529,555 530,121 530,476 530,606 537,392 542,150 538,283 538,309
Collectorc 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 1,418,637 1,415,774 1,413,953 1,414,667 1,414,155 1,408,752 1,388,515 1,380,712 1,373,348 1,368,471 1,369,500 1,366,079 1,378,933 1,382,653 1,369,424 1,366,614
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 4,270,970 4,182,252 4,194,553 4,219,031 4,193,670 4,201,402 4,153,294 4,099,020 4,079,891 4,089,015 4,090,007 4,072,433 4,061,225 4,069,380 4,075,567 4,073,952

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 and later.

c Collector is the sum of major and minor collectors.

NOTES

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

2009 data exclude 823 miles of federal agency owned roads and 71 miles of other non federal agency owned roads. 2008 data exclude 788 miles of federal agency owned roads. 2007 data exclude 788 miles of federal owned roads and 437 miles of local government owned roads. 2006 data exclude 788 miles of federal owned roads and included 274 miles of miscoded roads. 2005 data exclude 770 miles 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.

1996-2012: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual Issues), table HM-60, available at http://www.fhwa.dot.gov/policyinformation/statistics.cfm as of Feb. 7, 2014.