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Federal-aid Highway System Length By Functional System, 2000-2024 (HM-15)

Verified Source
US Government

@usgov.department_of_transportation_federal_aid_highway_syste_694f4da7

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Department of Transportation

Dataset Description

Annual road miles by functional system (National Highway System, other Federal-aid highways, and non-Federal-aid highways) and state for the 50 states, DC, and PR from the Highway Statistics Series table HM-15. Note: Missing 2009 and 2021.
Organization: Department of Transportation
Organization URL: https://catalog.data.gov/organization/dot
Last updated: 2026-04-23
Tags: functional system, highway statistics, hppi, roadways


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