Transportation Data, GIS & Modeling

Highway Performance Monitoring System

The Highway Performance Monitoring System (HPMS) is both a statewide and nationwide information system used to assess the condition, performance and safety of the nation's highways. It was developed in 1978 to serve highway transportation data and analytical needs at the national level. HPMS data is collected annually by all states and reported to the Federal Highway Administration (FHWA). Up to 98 separate data items are tracked in WSDOT's HPMS for approximately 5,500 sampled sections of roadway, representing Washington's 83,000 miles of public roads. The data items include pavement condition, traffic volume and capacity, roadway geometrics, and section improvement information.

The FHWA, using state-furnished data, provides Congress with assessments of future highway investment needs and investment/performance relationships. Congress utilizes the HPMS ability to monitor highway conditions, performance, usage, and operating characteristics to evaluate federal-aid programs and funding levels.

National comparisons use HPMS data to rank Washington with other states. National Ambient Air Quality Standards (NAAQS) non-attainment areas base their travel estimates on HPMS data. HPMS data and reports are delivered annually to many Washington agencies.

Questions or comments regarding the HPMS products and services, please email the HPMS Section or call (360) 570-2370.


HPMS Products and Services

Related Link

FHWA Policy Information and Data