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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
244th Avenue NE Slide Repair Project
Project completed in summer 2024
ADA Curb Ramps Upgrade Project
Work began in early June 2025
Bridge Guardrail Upgrades 2025
The 2025 Bridge Guardrail program is underway in summer 2025.
Cunliffe Road SW Slide Repair Project
Major construction completed in winter 2024
Historic and Scenic Corridors Project
The Historic and Scenic Corridors Project is a grant-funded project that identifies and preserves our county’s rich transportation history. The project documents the story of over 100 years of road building in the area.
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 384th Street Culvert Replacement Project
Project completed in September 2025
SE 432nd Street Culvert Replacement Project
Construction completed in fall 2024
SE 472nd Street Culvert Replacement Project
Road reopened on September 4, 2025
SW Cemetery Road Drainage Improvement Project
Work was completed in winter 2024
Test page
Project to begin in spring 2025
Test page with existing nav
Project to begin in spring 2025