U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


Skip to content
Facebook iconYouTube iconTwitter iconFlickr iconLinkedInInstagram

Policy and Governmental Affairs
Office of Highway Policy Information

FHWA Home / Policy & Governmental Affairs / Highway Policy Information / Table HM-16 - Highway Statistics 2018

Highway Statistics Series

Highway Statistics 2018


Printable Excel Version [41 KB]
Printable PDF Version [22 KB]

Public Road Length - 2018 (1)
  Miles by Ownership and Federal-Aid Highways
    National Summary

Revised: August 30, 2019

Table HM-16
OWNERSHIP FEDERAL-AID HIGHWAYS NON-
FEDERAL-AID
HIGHWAYS
TOTAL
NATIONAL HIGHWAY SYSTEM OTHER TOTAL
INTERSTATE OTHER TOTAL
Rural:
State Highway Agency 27,987 95,746 123,732 306,180 429,912 182,403 612,315
County - 363 363 216,681 217,044 1,334,073 1,551,117
Town, Township, Municipal (2) - 150 150 10,381 10,531 553,554 564,085
Other Jurisdictions 1,338 400 1,737 2,946 4,683 63,841 68,524
Federal Agency - 112 112 5,845 5,956 152,674 158,631
Total Rural 29,324 96,771 126,095 542,031 668,126 2,286,546 2,954,672
Small Urban Areas:
State Highway Agency 2,728 12,861 15,588 19,304 34,892 6,267 41,159
County - 157 157 12,062 12,219 36,147 48,366
Town, Township, Municipal (2) - 588 588 24,006 24,594 108,078 132,672
Other Jurisdictions 92 37 129 96 225 1,289 1,514
Federal Agency - 12 12 92 104 1,017 1,120
Total Small Urban Area 2,820 13,655 16,475 55,559 72,034 152,797 224,831
Urbanized Areas:
State Highway Agency 15,342 42,211 57,553 47,519 105,072 26,446 131,519
County - 4,185 4,185 50,403 54,587 147,633 202,221
Town, Township, Municipal (2) 17 13,501 13,518 111,645 125,163 543,316 668,479
Other Jurisdictions 1,238 1,022 2,260 605 2,865 3,971 6,835
Federal Agency - 84 84 286 370 6,347 6,717
Total Urbanized Area 16,597 61,002 77,599 210,457 288,057 727,714 1,015,770
Total Urban:
State Highway Agency 18,069 55,072 73,141 66,823 139,964 32,714 172,678
County - 4,342 4,342 62,464 66,807 183,780 250,586
Town, Township, Municipal (2) 17 14,089 14,106 135,651 149,757 651,394 801,151
Other Jurisdictions 1,331 1,058 2,389 701 3,090 5,259 8,349
Federal Agency - 96 96 377 473 7,364 7,837
Total Urban 19,417 74,657 94,074 266,017 360,091 880,511 1,240,602
Total Rural and Urban 48,741 171,428 220,169 808,048 1,028,217 3,167,057 4,195,274

(1) Includes the 50 States, Puerto Rico, and the District of Columbia. Due to conversion from English to metric units and rounding, individual cells may not agree with corresponding mileage table cell values. May differ from other tables; excludes unknown ownership mileage.

(2) Prior to 1999, municipal was included with other jurisdictions.

 

Page last modified on October 29, 2020
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000