Project updates

Learn about where and when construction is happening throughout the ST district.

Project updates

24 hour closure of South 259th Street for bridge girder installation

Sound Transit crews will close part of South 259th Street for 24 hours to install bridge girders over the roadway. Detours will be in place and marked. Drivers will have full access to all driveways during the closure. When in the area, drive cautiously and follow all signage and Sound Transit…

Closure of Alderwood Mall Blvd

As early as Tuesday, Dec. 12, Sound Transit’s contractor will continue traffic signal work on Alderwood Mall Blvd. This will require the closure of eastbound Alderwood Mall Blvd east of 44th Ave W. Detours will be provided (see map). The contractor has received a temporary noise variance to…

Center turn lane closures on 44th Ave W and 200th St SW

As early as Monday, Dec. 11, Sound Transit’s contractor will continue signal work on 44th Ave W and 200th St. SW. This will require the closure of the center turn lanes on 44th Ave W and Alderwood Mall Blvd. The intersection will be maintained for buses and flaggers will be present. Detours will be…

Daily lane closures on 44th Ave W

As early as Monday, Dec. 11, Sound Transit’s contractor will continue traffic signal work on 44th Ave W. This will require crews to close the right lanes on both southbound and northbound 44th Ave W. Patrons will still have access to businesses’ driveways. The contractor has received a temporary…

What we heard during outreach and next steps

Sound Transit is collaborating with the City of Lakewood to build a better-connected network to enable more people to walk, roll, bike, and take public transit to Lakewood Station and other neighborhood destinations. This fall, we hosted an online open house to share updates and seek feedback on…

Planning King Street Station pedestrian connections for Sounder passengers

Hello from the King Street Station Platform Area Improvements team! Last year, we shared the initial concepts for improving access to the Sounder platform, including new stairs and elevators, a new street-level concourse, and a longer platform to the south with a new entrance/exit.  

Continued nightly lane restrictions on Northeast 145th Street

Continuing Sunday, Dec. 10, Sound Transit will perform night-time lane closures to restrict the eastbound and westbound lanes on Northeast 145th Street, between 3rd Avenue Northeast and 8th Avenue Northeast. This construction will take place on Northeast 145th Street, just east of 5th Avenue…

200th St lane closure

As early as Monday, Dec. 4, Sound Transit’s contractor will continue road work on 200th St SW. This will require the closure of the right lane on 200th St SW between 48th Ave W and 46th Ave W. There will be a uniformed police officer on 200th St SW and 48th Ave W to direct two-way traffic. …

Overnight closures of SR 99 postponed to December 10 and 11

This alert was previously issued with the dates of December 3 and December 4. Dates have changed due to unfavorable weather conditions. 

Night work at Northgate Way stockpile yard

As early as Monday, Dec. 4, Sound Transit will be removing materials from the Northgate Way stockpile yard located at the southbound I-5 off-ramp to N Northgate Way at night. This work will go on for two weeks and is part of the Lynnwood Link Extension.