Annual mileage and travel information

The following mileage and travel information is provided to WSDOT by agencies throughout the state to support federal reporting requirements via the Highway Performance Monitoring System (HPMS). HPMS is a national set of data that is used by FHWA to assess the condition, performance and safety of the nation’s highways.

2021 miles and daily vehicle miles traveled (DVMT) information

[1]Interstate figures are also included in the State total. [2]Other Jurisdictions include State Dept. of Natural Resources, State Parks, Other State, Port Districts, Indian, U.S. Forest, and National Parks.

State highway mileage data is from State Highway Log; other data is from HPMS reporting

Historic public roadway vehicle miles traveled

This report, similar to the graphic above, contains historical centerline mile, lane mile and VMT data by year (back through 2002) for all public roadways in the state.

Public roadway VMT (XLSX 115KB)

Historic state highway vehicle miles traveled

This report contains historical centerline mile and VMT data by year for all roadways under state jurisdiction.

State highway VMT (XLSX 6.7MB)

HPMS annual reports

Historic HPMS reported mileage (XLSX 12.1KB)

Miles and daily VMT (XLSX 17KB)

HPMS mileage and daily travel summary (XLSX 27KB)

HPMS miles and VMT by county (XLSX 19KB)

HPMS miles and VMT by county and functional classification (XLSX 62KB)

HPMS miles by functional classification and owner (XLSX 17KB)

HPMS VMT by functional classification and owner (XLSX 19KB)

Mileage report for other (non-WSDOT) agency roads (XLSX 17KB)

Travel activity by vehicle type (XLSX 14KB)

HPMS VMT history (DOCX 18KB)

Short Count Factoring Guide

Short Count Factoring Guide (PDF 1MB):    This guide provides a general overview of traffic counting programs, as well as a more detailed discussion of suggested practice in relation to short duration traffic count field and office techniques. The intent is to encourage high standards and uniform practices among local traffic counting programs within the State of Washington so that an accurate representation of traffic on our public roadways is available to all interested parties.  It is an informational guide only and does not constitute a specification or a statement of required practice.