Estimated Lane-Miles of Public Roads by Functional System and State, 1980 - 2024 (HM-60)
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Miles of public roads by the roadway's functional system and whether rural or urban for the 50 states, DC, and Puerto Rico (from 1996) from FHWA Highway Statistics table HM-60. (Note: In 2009, the Urban functional class of Collectors became Major Collectors and Minor Collectors.)
