Feedback wanted from Ferndale and Whatcom County travelers

SR 524 - Yew Way railroad crossing/intersection adjustment

Project news

  • Work on SR 524 began July 6. Expect nighttime single lane closures.
  • Construction will take about two months to complete.
  • Sign up to receive email updates about this project and other Snohomish County area topics.

Needs & benefits

Snow a major factor in 2019 state ferry ridership drop

Temporary ferry schedule changes at Seattle's Colman Dock begin Jan. 4

SR 99 - NB Duwamish River Bridge - Select Grid Deck Replacement - Complete September 2020


During summer 2020, we replaced 14 steel panels, each one about 6 feet by 26 feet, on the roadway deck of the northbound SR 99 Duwamish River Bridge, commonly known as the 1st Avenue South bridge. This work keeps the bridge in a state of good repair. This highway is a critical route between cities like Burien, Normandy Park and SeaTac, and Sea-Tac Airport to Seattle, carrying about 62,000 vehicles each day.

How you benefit

Safety: This work increases traction on the bridge and provide a smoother, safer ride for travelers.

I-90 - SR 202 to Snoqualmie Valley Trail Bridge - Seismic Retrofit

Project news

  • Snoqualmie Valley Trail users should be prepared for construction work along the trail under I-90 near North Bend. To see what you can expect, maps are posted here.
  • Sign up to receive email updates about this project and other east King County topics.


More than 700,000 ferries customers will dash through the Sound over Christmas week

Northwest Region - Dayton Ave RHQ Building Renovation

Project news

  • Construction is underway.
  • The building will remain open and staffed throughout this project.


Through legislative action, the Washington State Department of Transportation received funding to renovate the Northwest Region Headquarters located along Dayton Avenue North in Shoreline.

Changes coming to eastbound SR 520 ramp in Seattle

Ferry schedule changes at Colman Dock begin Jan. 4, 2020

SR 20 North Cascades Highway, between Diablo and Mazama, closing to vehicles until 2020

SR 531 - 43rd Ave NE to 67th Ave NE - Widening

Project news

  • WSDOT teams are currently working on preliminary design plans and environmental reviews.
  • This project is scheduled for construction in 2023 and 2024.

Needs & Benefits

Expect an extra helping of passengers on state ferries over Thanksgiving weekend

I-5 & SR 548 - Tributaries to California Creek - Fish Passage

Project news

  • For information on this, and other Whatcom County highway projects, subscribe to weekly email updates.

Needs & benefits

Washington State Department of Transportation contractor crews have replaced culverts in two different waterways leading to California Creek in Whatcom County.

All done! Seattle's Alaskan Way Viaduct is history