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.

2021 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]

7,052.30

18,706

92,541

33,777

58.4%

(Interstate)

(763.58)

(4,054)

(44,908)

(16,391)

(28.4%)

City

17,514.31

36,656

39,446

14,398

24.9%

County

39,249.12

78,750

24,127

8,806

15.2%

Other [2]

15,610.81

31,233

2,233

815

1.4%

Total

79,426.58

165,092

158,347

57,797

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 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 6.6MB)

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 3.4MB):    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.

 

Traction tires are a special type of tire

manufactured with at least 1/8 of an inch tread. Traction tires are usually marked with a mountain/snowflake symbol, the letters M+S or “All Season.”

Carry chains, practice before leaving

Requiring chains keeps traffic moving during storms rather than closing a pass or roadway.

Prep your car. Fill up your gas tank,

pack jumper cables, ice scraper, warm clothing, snacks and water.