U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
October 26, 2021
| OWNERSHIP | FEDERAL-AID HIGHWAYS | NON- FEDERAL-AID HIGHWAYS |
TOTAL | ||||
|---|---|---|---|---|---|---|---|
| NATIONAL HIGHWAY SYSTEM | OTHER | TOTAL | |||||
| INTERSTATE | OTHER | TOTAL | |||||
| Rural: | |||||||
| State Highway Agency | 45,094 | 155,150 | 200,244 | 492,488 | 692,732 | 294,337 | 987,069 |
| County | - | 604 | 604 | 349,438 | 350,043 | 2,136,710 | 2,486,752 |
| Town, Township, Municipal (2) | - | 246 | 246 | 16,930 | 17,176 | 900,183 | 917,359 |
| Other Jurisdictions | 2,120 | 635 | 2,755 | 5,069 | 7,824 | 111,965 | 119,789 |
| Federal Agency | - | 168 | 168 | 9,489 | 9,657 | 208,694 | 218,351 |
| Total Rural | 47,214 | 156,803 | 204,017 | 873,414 | 1,077,431 | 3,651,889 | 4,729,320 |
| Small Urban Areas: | |||||||
| State Highway Agency | 4,372 | 20,521 | 24,893 | 31,146 | 56,039 | 10,279 | 66,318 |
| County | - | 216 | 216 | 19,416 | 19,632 | 59,040 | 78,672 |
| Town, Township, Municipal (2) | - | 910 | 910 | 39,292 | 40,202 | 175,351 | 215,553 |
| Other Jurisdictions | 166 | 49 | 215 | 199 | 414 | 2,322 | 2,736 |
| Federal Agency | - | 15 | 15 | 158 | 173 | 1,594 | 1,766 |
| Total Small Urban Area | 4,538 | 21,712 | 26,250 | 90,210 | 116,460 | 248,587 | 365,047 |
| Urbanized Areas: | |||||||
| State Highway Agency | 24,697 | 67,764 | 92,460 | 77,190 | 169,650 | 44,237 | 213,887 |
| County | 1 | 6,638 | 6,639 | 81,082 | 87,722 | 241,190 | 328,912 |
| Town, Township, Municipal (2) | 26 | 21,703 | 21,729 | 184,434 | 206,163 | 875,947 | 1,082,110 |
| Other Jurisdictions | 1,990 | 1,633 | 3,623 | 2,213 | 5,836 | 11,377 | 17,213 |
| Federal Agency | - | 166 | 166 | 493 | 659 | 9,992 | 10,651 |
| Total Urbanized Area | 26,714 | 97,904 | 124,618 | 345,412 | 470,030 | 1,182,743 | 1,652,773 |
| Total Urban: | |||||||
| State Highway Agency | 29,068 | 88,285 | 117,353 | 108,336 | 225,689 | 54,516 | 280,205 |
| County | 1 | 6,855 | 6,856 | 100,498 | 107,354 | 300,230 | 407,584 |
| Town, Township, Municipal (2) | 26 | 22,613 | 22,639 | 223,726 | 246,365 | 1,051,298 | 1,297,663 |
| Other Jurisdictions | 2,156 | 1,682 | 3,838 | 2,412 | 6,250 | 13,700 | 19,949 |
| Federal Agency | - | 181 | 181 | 651 | 832 | 11,586 | 12,418 |
| Total Urban | 31,252 | 119,615 | 150,867 | 435,623 | 586,490 | 1,431,330 | 2,017,820 |
| Total Rural and Urban | 78,465 | 276,419 | 354,884 | 1,309,037 | 1,663,921 | 5,083,219 | 6,747,140 |
(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.
