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Federal
Road Length by Measured Pavement Roughness, 2000-2024 (HM-64)
Department of Transportation —
Annual road length by measured pavement roughness using the IRI (International Roughness Index) by functional class for the 50 states, DC, and PR from the Highway... -
Federal
Collection Highway Performance Monitoring System (HPMS)
Department of Transportation —
HPMS compiles data on highway network extent, use, condition, and performance. The system consists of a geospatially-enabled database that is used to generate reports...