Search›Data.gov CatalogData.gov CatalogHPMS County Summary 2024Published by Federal Highway AdministrationOpen at source ↗Download / API ↗Ask a question about this datasetAbout this datasetState DOTs provide Local and Rural Minor Collector mileage summarized by county and ownership as a direct input to the Highway Performance Management System (HPMS).Tagscountyhpmshppimileage