About the Road Services Division

Overview

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

As of January 1, 2019, Road Services is part of the King County Department of Local Services. The Department also includes the Permitting Division and the Community Service Areas Program. 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.

Road Services Director: Tricia Davis

This video helps explain the Department of Local Services' Road Services Division, which maintains more than 1,500 miles of roadway in the unincorporated areas of King County, Washington.

Facts and figures

This information is the King County Road Services Division’s (“Roads”) asset data for the calendar year, which is updated annually and represents a moment in time. Asset inventory numbers change over time due to the addition of new assets, retirement of old assets, and improvements in data accuracy.

2025 Roads Adopted Budget
Staff	Capital Program	Operating Budget	Total
435.6	$25.2M	$128.8M	$154M

County Population
	2023	2024	Annual Change
Population of King County	2,347,800	2,378,100	1.3%
Population of Unincorporated King County (Roads Service Area)	249,060	249,575	0.2%

County-Owned Assets
Maintained Center Lines 1,470	Maintained Lane Miles 2,963	Bridges 194	Street Lights 768
Traffic Cameras 107	Traffic Signals 80	Traffic Control Signs 49,718	Guardrails 120 miles
Sidewalk Miles 277	School Zone Flashers 191	Radar Speed Signs 60	Cross-walks 723
Drainage Pipe ~3.5 million linear feet	Drainage Ditch ~4.6 million linear feet	Catch Basins 27,686	Culverts 28,611