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King County Road Services - Facts and figures

Mission: Maintain, preserve, and improve the unincorporated King County road and bridge system for the safe and efficient movement of people, goods, and services, and quickly respond to storms, floods, and other emergencies.

Vision: Road Services Division - A skilled, efficient, and innovative provider of quality roads in collaboration with unincorporated King County residents and all users of the unincorporated road system.

Service area: Road Services is responsible for all county-owned road and bridge infrastructure in the unincorporated areas of King County, and also provides services to several cities and other agencies by contract.

2010 / 2011 Adopted Biennial Budget:

  • $171 million Operating Budget
  • $262.4 million Capital Improvement Program (CIP) Budget

Employees: 559 positions authorized in budget.

Division Director: Paulette Norman, P.E.

The numbers listed below are for the year 2009 unless otherwise indicated. Please note that they reflect a snapshot in time and are ever-changing.

General information
Total King County area, square miles 2,134
Square miles served in unincorporated King County 1,734
Population of King County over 1.9 million
Population of unincorporated King County 343,300
Miles of paved roads managed 1,691
Miles of unpaved roads managed 51
Total county bridges (including five co-owned with cities) 184
County bridges replaced 4
City bridges inspected under contract 139
Requests for road maintenance service 5,600
Lane miles of road plowed/sanded 15,069
Lane miles of road swept 11,870
Linear feet of drainage ditch cleaned 119,856
Utility permits processed 3,157
Drainage projects completed 126
Catch basins cleaned 5,738
Traffic collisions analyzed 2,130
Traffic control signs maintained 44,386
Traffic signals maintained 116
Traffic counts performed 1,330
Traffic field investigations performed (citizen requests investigated) 981
Linear feet of guardrail installed 14,850
Total linear feet of county guardrail inventory (as of 2010) 593,606 (112 miles)
Linear feet of road striping installed 2,050
New traffic cameras installed 13
Total traffic cameras operated 52
Ongoing contract services to cities Burien, Covington, Federal Way, Kenmore, Lake Forest Park, Maple Valley, Newcastle, Sammamish, SeaTac, Shoreline, Woodinville
As-needed services to cities/other agencies Algona, Auburn, Bellevue, Black Diamond, Bothell, Carnation, Des Moines, Duvall, Enumclaw, Issaquah, Kent, Kirkland, Medina, Mercer Island, Milton, Normandy Park, North Bend, Pacific, Redmond, Renton, Seattle, Snoqualmie, Tukwila, Sound Transit, and King County Department of Natural Resources and Parks
Capital improvement projects under active design 61
Projects under construction 29
Customers served by Map and Records Center (phone and walk-in) 3,541
Road Alert service subscribers 3,901
Road vacation applications processed 13
Archeological/historic project reviews 84
Adopt-A-Road volunteer groups 268
Miles of road adopted for litter control 484
Adopt-A-Road volunteer hours contributed since 1991 over 79,000
Environmental reviews (SEPA/NEPA) completed 33
Local/state/federal permits applied for 97
Sensitive area mitigation sites monitored 55
Environmental studies performed (i.e., biological assessments, stream and wetland studies, fish and wildlife evaluations, vegetation surveys, geotechnical studies) 106



Information from the Road Services Division's website is available to people with disabilities in alternate formats upon request by calling 206-263-6482 or 711 for the TTY relay service.

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