Annual mileage and travel information
Statewide mileage and travel information based on public roadway data provided annually to the Federal Highway Administration (FHWA).
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.
2023 miles and daily vehicle miles traveled (DVMT) information
| Jurisdiction Level | Centerline Miles in Miles | Lane Miles in Miles | Daily Vehicle Miles Traveled (1,000s) | Annual Vehicle Miles Traveled (Millions) |
Percent of VMT
|
|---|---|---|---|---|---|
| State Total [1] | 7,053.50 | 18,759 | 96,273 | 35,140 | 58.8% |
| (Interstate) | (763.58) | (4,065) | (47,211) | (17,232) | (24.8%) |
| City | 17,612.15 | 36,844 | 40,613 | 14,824 | 24.8% |
| County | 39,236.29 | 78,726 | 24,708 | 9,019 | 15.1% |
| Other [2] | 15,639.63 | 31,293 | 2,253 | 822 | 1.4% |
| Total | 79,541.57 | 165,622 | 163,847 | 59,804 | 100% |
[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 116KB)
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 6.59MB)
HPMS annual reports
Historic HPMS reported mileage (XLSX 11.4KB)
Miles and daily VMT (XLSX 13.5KB)
HPMS mileage and daily travel summary (XLSX 23.4KB)
HPMS miles and VMT by county (XLSX 18.2KB)
HPMS miles and VMT by county and functional classification (XLSX 42.9KB)
HPMS miles by functional classification and owner (XLSX 17.6KB)
HPMS VMT by functional classification and owner (XLSX 18.9KB)
Mileage report for other (non-WSDOT) agency roads (XLSX 15KB)
Travel activity by vehicle type (XLSX 11.1KB)
HPMS VMT history (DOCX 22.9KB)
HPMS Miles and VMT by county, owner, and city (XLSX 69KB)
Short Count Factoring Guide
Short Count Factoring Guide (PDF 1022KB): 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.
Slow down – lives are on the line.
Excessive speed was a top cause of work zone collisions in 2024.
Phone down, eyes up.
Work zones need our undivided attention.
It's in EVERYONE’S best interest.
96% of people hurt in work zones are drivers, their passengers or passing pedestrians, not just our road crews.