Highway Statistics Series
Highway Statistics 2022
PUBLIC ROAD LENGTH - 2022 (1)
KILOMETERS BY FUNCTIONAL SYSTEM AND FEDERAL-AID HIGHWAYS
NATIONAL SUMMARY
January 26, 2024
| FUNCTIONAL SYSTEM | FEDERAL-AID HIGHWAYS | NON- FEDERAL-AID HIGHWAYS |
TOTAL | ||||
|---|---|---|---|---|---|---|---|
| NATIONAL HIGHWAY SYSTEM | OTHER | TOTAL | |||||
| INTERSTATE | OTHER | TOTAL | |||||
| Rural: | |||||||
| Principal Arterial: | |||||||
| Interstate | 47,373 | - | 47,373 | - | 47,373 | - | 47,373 |
| Other Freeways and Expressways | - | 10,556 | 10,556 | 50 | 10,606 | - | 10,606 |
| Other | - | 142,709 | 142,709 | 5,174 | 147,883 | - | 147,883 |
| Subtotal | 47,373 | 153,265 | 200,638 | 5,223 | 205,862 | - | 205,862 |
| Minor Arterial | - | 4,168 | 4,168 | 212,086 | 216,254 | - | 216,254 |
| Major Collector | - | 822 | 822 | 656,452 | 657,273 | - | 657,273 |
| Minor Collector | - | 4 | 4 | - | 4 | 418,416 | 418,421 |
| Local | - | 71 | 71 | - | 71 | 3,248,655 | 3,248,726 |
| Total Rural | 47,373 | 158,330 | 205,704 | 873,761 | 1,079,465 | 3,667,071 | 4,746,536 |
| Small Urban: | |||||||
| Principal Arterial: | |||||||
| Interstate | 4,540 | - | 4,540 | - | 4,540 | - | 4,540 |
| Other Freeways and Expressways | - | 2,272 | 2,272 | 71 | 2,343 | - | 2,343 |
| Other | - | 18,682 | 18,682 | 2,798 | 21,480 | - | 21,480 |
| Subtotal | 4,540 | 20,953 | 25,494 | 2,870 | 28,363 | - | 28,363 |
| Minor Arterial | - | 638 | 638 | 32,938 | 33,577 | - | 33,577 |
| Major Collector | - | 72 | 72 | 45,682 | 45,754 | - | 45,754 |
| Minor Collector | - | 14 | 14 | 8,887 | 8,901 | - | 8,901 |
| Local | - | 25 | 25 | - | 25 | 252,897 | 252,921 |
| Total Small Urban | 4,540 | 21,702 | 26,243 | 90,377 | 116,619 | 252,897 | 369,516 |
| Urbanized: | |||||||
| Principal Arterial: | |||||||
| Interstate | 26,767 | - | 26,767 | - | 26,767 | - | 26,767 |
| Other Freeways and Expressways | - | 17,141 | 17,141 | 261 | 17,402 | - | 17,402 |
| Other | - | 76,953 | 76,953 | 8,414 | 85,367 | - | 85,367 |
| Subtotal | 26,767 | 94,094 | 120,861 | 8,674 | 129,536 | - | 129,536 |
| Minor Arterial | - | 2,414 | 2,414 | 146,016 | 148,430 | - | 148,430 |
| Major Collector | - | 641 | 641 | 166,349 | 166,990 | - | 166,990 |
| Minor Collector | - | 54 | 54 | 27,008 | 27,062 | - | 27,062 |
| Local | - | 202 | 202 | - | 202 | 1,199,012 | 1,199,214 |
| Total Urbanized | 26,767 | 97,406 | 124,173 | 348,047 | 472,220 | 1,199,012 | 1,671,232 |
| Total Urban: | |||||||
| Principal Arterial: | |||||||
| Interstate | 31,308 | - | 31,308 | - | 31,308 | - | 31,308 |
| Other Freeways And Expressways | - | 19,412 | 19,412 | 332 | 19,744 | - | 19,744 |
| Other | - | 95,635 | 95,635 | 11,212 | 106,847 | - | 106,847 |
| Subtotal | 31,308 | 115,047 | 146,355 | 11,544 | 157,899 | - | 157,899 |
| Minor Arterial | - | 3,052 | 3,052 | 178,954 | 182,006 | - | 182,006 |
| Major Collector | - | 713 | 713 | 212,031 | 212,744 | - | 212,744 |
| Minor Collector | - | 69 | 69 | 35,895 | 35,963 | - | 35,963 |
| Local | - | 227 | 227 | - | 227 | 1,451,908 | 1,452,135 |
| Total Urban | 31,308 | 119,108 | 150,416 | 438,424 | 588,840 | 1,451,908 | 2,040,748 |
| Total Rural and Urban | 78,681 | 277,438 | 356,120 | 1,312,185 | 1,668,305 | 5,118,980 | 6,787,284 |
(1) Includes the 50 States, Puerto Rico, and the District of Columbia. Due to conversion from English to metric units and to rounding, individual cell values may not agree with corresponding mileage table cell values.