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Most King County offices will be closed on Monday, May 29, 2017, for Memorial Day.  
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Cascade Scenic Highway Bridge #999X
Cascade Scenic Highway Bridge #999X.

The King County Road Services Division is responsible for all county-owned roads, bridges and related infrastructure in the unincorporated area of King County.

Road Services is one of five divisions in the King County Department Transportation. The other divisions are the King County International Airport, Fleet Administration, the Marine Division and Metro Transit. The department director reports to the King County Executive, who is the elected executive officer of county government.

The Metropolitan King County Council, the legislative branch of county government, adopts laws, sets policies and holds final approval over the budget.

Facts and figures

Division Director: Brenda Bauer

The numbers listed below are current as of December 31, 2016 unless otherwise indicated. Please note that they reflect a snapshot in time, and are ever changing.

General information
Total land area of King County (KC) 2,307 square miles
Land area of unincorporated King County 1,734 square miles
Population of King County 2,105,100
Population of unincorporated King County 245,920
Roadways 1,469 miles
Bridges 181
Traffic signals 78
Traffic control signs 44,442
Traffic cameras 52
Call us:

206-477-8100 or 1-800-527-6237 (1-800-KC-ROADS)


Send us an email.