Photo by Dan Gold on Unsplash

This blog post was updated on April 30, 2021. I find myself googling for this data once a month or so. I just can’t seem to remember where to find it on the Federal Highway Administration’s website. Below are states by total 2019 lane miles–which is the most recent dataset available today and is dated September 2020.

Road Miles by State: Sorted from Most to Least

STATETOTAL LANE MILES
Texas683,533
California396,540
Illinois306,658
Minnesota290,618
Kansas286,606
Missouri277,504
Florida275,376
Georgia272,662
Ohio262,492
Michigan256,579
Pennsylvania251,708
New York240,489
Wisconsin239,318
Oklahoma238,754
Iowa235,549
North Carolina229,011
Arkansas210,729
Alabama210,531
Tennessee203,850
Indiana202,707
Nebraska193,996
Colorado185,486
North Dakota178,845
Washington167,632
Kentucky166,971
South Dakota166,635
South Carolina166,594
Virginia164,132
Oregon162,101
Mississippi162,088
Montana150,446
New Mexico150,216
Arizona146,465
Louisiana134,115
Idaho107,568
Utah102,031
Nevada100,805
New Jersey85,108
West Virginia80,167
Massachusetts77,730
Maryland71,129
Wyoming62,620
Maine46,736
Connecticut45,916
Alaska36,009
New Hampshire33,391
Vermont29,273
Delaware14,069
Rhode Island12,664
Hawaii9,799
District of Columbia3,445
Source: U.S. Department of Transportation Federal Highway Administration. Office of Highway Policy Information. Highway Statistics Series. Functional System Lane-Length – 2019. Released September 30, 2020. You can download an Excel or PDF version of this data here.

Pie Graph Showing 2019 Lane Miles by State
And just for fun, here’s a pie graph of this table.

Helpful Links with Road Miles by State data
If you need historic data like lane miles for 1980 to 2007, check out Functional System Data; Estimated Lane – Length page. If you need Function System data for 2008 (i.e. interstates, freeways, arterial, collectors and local), check out FHWA’s Functional System Lane-Length – 2008 Lane-Miles page.

And below are links to FHWA’s Functional System Lane-Length by year. You can download PDF and Excel versions of the data on these pages.

Got questions? Email us.

5 replies on “Road Miles by State”

  1. Can you please define ‘lane mile’ for me? Also, are these totals for all public roads (interstate, freeway, commercial, residential, etc)?

    Thanks!

    Chris

  2. I have seen numbers as high as 2+ M miles of roads, all types, for California alone. These numbers are always low as they don’t usually count privately owned roads (ranch, private logging lands, etc.) and they don’t count primitive roads on USFS or BLM lands which can be in the thousands per county alone.

    We should have a listing for alternative numbers …

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