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Roads and bridges
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Bridges
King County's Department of Local Services, Road Services Division owns and maintains 185 bridges in the unincorporated area of King County. These bridges are an integral part of a road system that supports more than one million vehicle trips every day.
Sign up for road alerts
Road Alert is an email and text alert service for travelers on roads in unincorporated King County. Subscribers get emails and text messages about unincorporated King County road construction projects, significant weather-related road closures and natural disasters. You can receive all alerts or just messages for roads in specific zones.
Road closures in unincorporated King County
Learn about road closures and restrictions in unincorporated King County due to road construction projects, significant weather-related events, and natural disasters.
Road Services projects and programs
Road Services' projects and programs in unincorporated King County
Road services list
List of Roads' online services and information for unincorporated King County.
Road helpline
Helpline for road maintenance and traffic safety issues in unincorporated King County, such as downed stop signs, signals that are out, or trees over the roadway. The helpline is open 24 hours a day, every day.
Additional links
16th Avenue SW: SW 100th Street to SW 107th Street Pedestrian Safety Improvements & Traffic Calming Project
Construction in summer 2025
244th Avenue NE Slide Repair Project
Project completed in summer 2024
ADA Curb Ramps Upgrade Project 
Work expected to start in spring 2025
Bridge Guardrail Upgrades 2025
The 2025 Bridge Guardrail program is expected to run from January to April 2025
Cunliffe Road SW Slide Repair Project
Major construction completed in winter 2024
Guardrail Program
The Guardrail Program will begin in fall 2025
LED Stop Sign Upgrade Project
Work ongoing through 2024
NE Tolt Hill Road Slide Repair Project
Project completed in summer 2024
Redmond Ridge Drive NE and NE Alder Crest Drive Roundabout Project
Project completed in summer 2024
Right-of-way use permits
Right-of-way (ROW) use permits authorize the use of the King County right-of-way for a designated purpose.
Road Resurfacing Projects
Work scheduled for 2025
SE 432nd Street Culvert Replacement Project
Construction completed in fall 2024
SW Cemetery Road Drainage Improvement Project
Work began in fall 2024
SW Cemetery Road Drainage Improvement Project
Work was completed in winter 2024
Test page
Project to begin in spring 2025