Highway Performance Monitoring System (HPMS) 2024

The Highway Performance Monitoring System (HPMS) 2024 dataset was compiled December 23, 2025 by the Federal Highway Administration (FHWA) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The data represents a snapshot of extent, usage, condition, and performance as of December 31, 2024. This file geodatabase download provides HPMS data for each state as an individual feature class. The HPMS has additional documentation available here: https://github.com/FHWA/HPMS/blob/2024-HPMS/README_2024_HPMS_All.md, which details known limitations and provides necessary disclaimers. The HPMS consists of the All Road Network of Linear Referenced Data (ARNOLD) geometry and the Section Data which is the attribution. ARNOLD and Sections are linked through linear referencing and are part of the HPMS data program. These data are analytical for supporting transportation programs, funding and policy decisions at a national level. Operational applications such as navigation and routing may use HPMS, understanding that it is not a “real-time” system, nor is it the primary focus of the data collection. The Highway Performance Monitoring System Field Manual contains a detailed description of each data element including coding instructions and attribute definitions. The Field Manual is available at: https://doi.org/10.21949/1519108.

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