HPMS County Summary 2019

State DOTs provide Local and Rural Minor Collector mileage summarized by county and ownership as a direct input to the Highway Performance Management System (HPMS). The final numbers provided in the Highway Statistics tables are different due to additional data processing steps.
Organization: Department of Transportation
Organization URL: https://catalog.data.gov/organization/dot
Last updated: 2025-07-01
Tags: hpms, hppi