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.

2020 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]

7,052.28

18.697

82,061

29,952

56%

(Interstate)

(763.58)

(4,046)

(39,394)

(14,379)

(26.9%)

City

17,427.58

36,472

38,707

14,128

26.4%

County

39,228.89

78,711

26,681

8,643

16.2%

Other [2]

17,313.46

34,639

2,159

788

1.5%

Total

81,022.21

168,271

146,607

53,512

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 109KB)

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 6.69MB)

HPMS annual reports

Historic HPMS reported mileage (XLSX 9KB)

Miles and daily VMT (XLSX 11KB)

HPMS mileage and daily travel summary (XLSX 22KB)

HPMS miles and VMT by county (XLSX 17KB)

HPMS miles and VMT by county and functional classification (XLSX 50KB)

HPMS miles by functional classification and owner (XLSX 16KB)

HPMS VMT by functional classification and owner (XLSX 11KB)

Mileage report for other (non-WSDOT) agency roads (XLSX 12KB)

Travel activity by vehicle type (XLSX 12KB)

HPMS VMT history (DOCX 25KB)

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.

 

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