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Find a Commonwealth ResourceU.S Department of Transportation
A GeoJSON file with all spatial roadway data for all sections from the 2024 Highway Performance Monitoring System (HPMS) attached to the All Road Network of Linear Referenced Data (ARNOLD) network. This file was…
Updated Oct 25, 2026
U.S Department of Transportation
This summary tables provides annual counts of tunnels on and off the National Highway System (NHS) by States and territories beginning in 2018.
Updated Oct 25, 2026
U.S Department of Transportation
Miles of the National Highway System (NHS) by functional system for each of the 50 states, DC, and Puerto Rico from FHWA Highway Statistics table HM-41.
Updated Oct 25, 2026
U.S Department of Transportation
This summary tables provides annual counts of bridges on and off the National Highway System (NHS) by States and territories beginning in 2000.
Updated Oct 25, 2026
