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Table 1-5: U.S. Public Road and Street Mileage by Functional Systema

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  1990 1991 1992 1993 1994 1995 1996 1997 b1998 1999 2000 2001 2002 2003 2004 2005 2006
TOTAL urban and rural mileage 3,866,926 3,883,920 3,901,081 3,905,211 3,906,595 3,912,226 3,919,652 3,945,872 3,906,290 3,917,243 3,936,222 3,948,335 3,966,485 3,974,107 3,981,512 3,995,635 4,016,741
Urban mileage, total 744,644 749,862 785,066 805,877 813,785 819,706 826,765 836,740 841,642 846,085 852,243 877,004 894,724 940,969 981,276 1,009,839 1,029,366
Principal arterials, Interstates 11,527 11,602 12,516 12,877 13,126 13,164 13,217 13,247 13,312 13,343 13,379 13,406 13,491 14,460 15,129 15,703 16,044
Principal arterials, other freeways, and expressways 7,668 7,709 8,491 8,841 8,994 8,970 9,027 9,063 9,127 9,132 9,140 9,126 9,323 9,870 10,246 10,560 10,748
Principal arterials, other 51,968 52,515 51,900 52,708 53,110 52,796 52,983 53,223 53,132 53,199 53,314 53,056 53,439 56,870 59,695 61,803 62,830
Minor arterials 74,659 74,795 80,815 86,821 87,857 88,510 89,020 89,185 89,496 89,432 89,789 89,962 90,411 93,888 97,433 101,673 102,975
Collectors 78,254 77,102 82,784 84,854 86,089 87,331 87,790 88,049 88,071 88,005 88,200 88,713 89,247 97,114 102,150 106,109 108,833
Local 520,568 526,139 548,560 559,776 564,609 568,935 574,728 583,973 588,504 592,974 598,421 622,741 638,813 668,767 696,623 713,991 727,936
Rural mileage, total 3,122,282 3,134,058 3,116,015 3,099,334 3,092,810 3,092,520 3,092,887 3,109,132 3,064,648 3,071,158 3,083,979 3,071,331 3,071,761 3,033,138 3,000,236 2,985,796 2,987,375
Principal arterials, Interstates 33,547 33,677 32,951 32,631 32,457 32,580 32,820 32,817 32,813 32,974 33,048 33,061 32,992 32,048 31,443 30,905 30,586
Principal arterials, other 83,802 86,747 94,947 96,770 97,175 97,948 98,131 98,257 98,852 98,838 98,919 99,185 98,853 97,038 95,946 95,156 94,937
Minor arterials 144,774 141,795 137,685 137,577 138,120 137,151 137,359 137,497 137,308 137,462 137,575 137,587 137,568 135,596 135,449 135,408 135,386
Major collectors 436,352 436,746 434,072 432,222 431,115 431,712 432,117 432,714 432,408 432,934 433,121 433,284 430,946 424,288 420,046 419,999 419,117
Minor collectors 293,922 293,511 284,504 282,182 282,011 274,081 273,198 272,362 272,140 271,676 271,803 271,377 270,700 267,524 267,842 264,387 262,841
Local 2,129,885 2,141,582 2,131,856 2,117,952 2,111,932 2,119,048 2,119,262 2,135,485 2,091,127 2,097,274 2,109,513 2,096,837 2,100,702 2,076,644 2,049,510 2,039,941 2,044,508

a Includes the 50 states and the District of Columbia. When states did not submit reports, data were estimated by the U.S. Department of Transportation, Federal Highway Administration.

b Beginning in 1998, approximately 43,000 miles of Bureau of Land Management roads are excluded.

NOTE

A public road is any road under the ownership of and maintained by a public authority (federal, state, county, town or township, local government or instrumentality thereof) and open to public travel. No consistent data on private road mileage are available. For more detailed information, including breakouts of mileage by ownership and type of surface, see the source document.

SOURCES

1990-95: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table HM-220.

1996-2006: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table HM-20, Internet site www.fhwa.dot.gov/policy/ohpi as of Jan. 4, 2008.
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