Public Road Mileage by State, 2024
The United States has 4,208,454 miles of public road. Most of it is rural, most of it is local, and most of the driving happens on a small fraction of it.
- Miles of public road in 2024, all owners
- 4,208,454
- Share of those miles classed rural
- 70%
- Centerline miles of Interstate
- 48,830
- Vehicle miles driven in the year
- 3.29T
Select a column heading to sort.
| Alabama | 99,025 | 68.6% | 1,004 | 66,934 | 72,904 | 736,218 | 19.2 |
|---|---|---|---|---|---|---|---|
| Alaska | 17,654 | 80.9% | 1,080 | 11,704 | 5,503 | 311,714 | 23.9 |
| Arizona | 76,079 | 58.2% | 1,168 | 56,043 | 70,451 | 926,024 | 10.0 |
| Arkansas | 99,200 | 81.2% | 768 | 69,865 | 39,372 | 396,895 | 32.1 |
| California | 177,607 | 42.1% | 2,456 | 114,138 | 325,959 | 1,835,282 | 4.5 |
| Colorado | 89,955 | 74.6% | 952 | 63,518 | 55,068 | 612,173 | 15.1 |
| Connecticut | 21,472 | 25.7% | 347 | 14,696 | 30,947 | 1,441,272 | 5.8 |
| Delaware | 6,695 | 43.8% | 41 | 4,825 | 9,937 | 1,484,242 | 6.4 |
| District of Columbia | 1,519 | 0.0% | 12 | 1,069 | 3,539 | 2,329,822 | 2.2 |
| Florida | 124,581 | 33.7% | 1,495 | 92,544 | 249,474 | 2,002,504 | 5.3 |
| Georgia | 127,308 | 64.2% | 1,247 | 88,767 | 122,216 | 960,003 | 11.4 |
| Hawaii | 4,628 | 29.9% | 55 | 2,986 | 10,647 | 2,300,562 | 3.2 |
| Idaho | 59,240 | 87.2% | 612 | 43,742 | 20,046 | 338,386 | 29.6 |
| Illinois | 146,034 | 66.0% | 2,186 | 106,630 | 104,290 | 714,149 | 11.5 |
| Indiana | 97,401 | 70.6% | 1,320 | 63,854 | 88,231 | 905,853 | 14.1 |
| Iowa | 115,063 | 88.2% | 789 | 72,721 | 33,817 | 293,900 | 35.5 |
| Kansas | 138,993 | 89.9% | 877 | 94,791 | 31,670 | 227,853 | 46.8 |
| Kentucky | 79,678 | 80.6% | 998 | 55,672 | 49,168 | 617,084 | 17.4 |
| Louisiana | 66,515 | 65.0% | 945 | 47,708 | 55,109 | 828,520 | 14.5 |
| Maine | 22,862 | 84.4% | 367 | 14,432 | 15,161 | 663,153 | 16.3 |
| Maryland | 32,669 | 42.2% | 494 | 22,777 | 57,049 | 1,746,273 | 5.2 |
| Massachusetts | 36,931 | 16.1% | 566 | 25,066 | 62,013 | 1,679,158 | 5.2 |
| Michigan | 122,056 | 68.0% | 1,239 | 81,134 | 99,661 | 816,519 | 12.0 |
| Minnesota | 142,488 | 82.5% | 913 | 96,285 | 59,181 | 415,340 | 24.6 |
| Mississippi | 78,398 | 82.6% | 831 | 54,010 | 41,554 | 530,039 | 26.6 |
| Missouri | 132,993 | 80.7% | 1,385 | 95,727 | 81,807 | 615,123 | 21.3 |
| Montana | 74,705 | 93.7% | 1,192 | 51,171 | 13,865 | 185,597 | 65.7 |
| Nebraska | 95,295 | 91.2% | 483 | 65,720 | 21,900 | 229,813 | 47.5 |
| Nevada | 47,564 | 77.6% | 635 | 37,398 | 28,433 | 597,784 | 14.6 |
| New Hampshire | 16,269 | 68.6% | 225 | 11,605 | 13,854 | 851,558 | 11.5 |
| New Jersey | 38,778 | 16.0% | 432 | 27,531 | 79,460 | 2,049,100 | 4.1 |
| New Mexico | 72,243 | 83.6% | 999 | 56,781 | 28,645 | 396,509 | 33.9 |
| New York | 116,320 | 56.3% | 1,786 | 78,700 | 120,869 | 1,039,108 | 5.9 |
| North Carolina | 108,827 | 63.8% | 1,433 | 79,079 | 131,008 | 1,203,819 | 9.9 |
| North Dakota | 88,565 | 96.7% | 571 | 69,410 | 10,030 | 113,250 | 111.2 |
| Ohio | 122,970 | 60.8% | 1,582 | 86,517 | 116,036 | 943,612 | 10.3 |
| Oklahoma | 115,560 | 83.3% | 983 | 80,262 | 46,456 | 402,008 | 28.2 |
| Oregon | 79,052 | 80.9% | 729 | 52,322 | 37,399 | 473,094 | 18.5 |
| Pennsylvania | 121,430 | 63.0% | 1,864 | 85,646 | 95,194 | 783,941 | 9.3 |
| Rhode Island | 6,559 | 22.3% | 70 | 4,645 | 7,656 | 1,167,251 | 5.9 |
| South Carolina | 78,432 | 63.7% | 851 | 55,140 | 62,042 | 791,029 | 14.3 |
| South Dakota | 81,825 | 95.9% | 679 | 55,718 | 10,450 | 127,712 | 88.5 |
| Tennessee | 95,945 | 68.2% | 1,202 | 67,068 | 78,904 | 822,388 | 13.3 |
| Texas | 326,028 | 63.7% | 3,478 | 220,568 | 308,461 | 946,118 | 10.4 |
| Utah | 49,505 | 73.4% | 943 | 36,202 | 36,160 | 730,431 | 14.1 |
| Vermont | 14,229 | 90.1% | 320 | 9,398 | 7,208 | 506,571 | 21.9 |
| Virginia | 75,649 | 62.9% | 1,119 | 49,172 | 88,511 | 1,170,022 | 8.6 |
| Washington | 78,909 | 67.3% | 763 | 52,105 | 60,555 | 767,403 | 9.9 |
| West Virginia | 39,138 | 85.2% | 556 | 26,395 | 17,214 | 439,828 | 22.1 |
| Wisconsin | 115,926 | 80.2% | 878 | 79,087 | 69,226 | 597,157 | 19.4 |
| Wyoming | 31,689 | 91.2% | 913 | 15,055 | 9,720 | 306,731 | 53.9 |
| United States | 4,208,454 | 70.3% | 48,830 | 2,914,334 | 3,294,031 | 782,718 | 12.4 |
Download this table as CSV 50 states and the District of Columbia
Who owns the most road
Texas has 326,028 miles of public road, nearly double second-place California at 177,607. Illinois, Minnesota and Kansas round out the top five, the last two well ahead of far more populous states because of dense grids of rural section-line roads. Texas also leads in Interstate mileage with 3,478 miles, ahead of California (2,456).
Road length per resident shows the burden more clearly. North Dakota has 111 miles of public road for every 1,000 residents and South Dakota has 88. The national figure is 12.4. Each of those miles still has to be inspected, patched and eventually rebuilt, and in sparsely populated states the cost is spread across very few taxpayers.
Where the traffic is
Dividing vehicle miles traveled by road miles gives a rough measure of how hard each mile of road works. The national average is about 783,000 vehicle miles per road mile per year. Hawaii, New Jersey and Florida run far above it, with the District of Columbia highest as an all-urban outlier. North Dakota and South Dakota sit at the bottom, where long rural mileage carries light traffic. The figure is an average across every class of road, so an Interstate in a quiet state can still carry heavy volume.
The rural share follows the same geography. North Dakota (97 percent) and South Dakota (96 percent) are almost entirely rural by mileage, while New Jersey and Massachusetts are near 16 percent. Urban and rural here follow Census-based urban area boundaries that states adjust, so the split moves after each census.
Reading the table
Mileage is centerline miles, so a four-lane divided highway counts once per mile of route, not once per lane. It covers all public roads regardless of owner, including state, county, city, township and federal agency roads. Local roads, the lowest functional class, make up 69 percent of the total. How roads are sorted into classes, and why the class decides federal funding eligibility, is explained in highway functional classification explained. The travel column comes from the IIHS state table, which uses the FHWA estimate of vehicle miles traveled.