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Public Road Length by Functional System and State, 1980 - 2024 (HM-20)

Published by Federal Highway Administration | Department of Transportation | Catalog Last Checked: March 26, 2026 at 09:58 PM | Dataset Last Updated: March 26, 2026
Annual length of U.S. public roads in miles by functional system for each of the 50 states, DC, and Puerto Rico from the Highway Statistics table HM-20. (Note: In 2009, the Urban functional class of Collectors became Major Collectors and Minor Collectors.)

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