Project updates

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

Project updates

New phase of testing begins May 21 on Lynnwood Link

Testing on the Lynnwood Extension of the 1 Line is entering a new phase starting as early as Tuesday, May 21. This phase includes training for operators and maintenance staff, and continued testing to ensure stations, tracks, utilities, and vehicles work together as expected in preparation for the…

Federal Way Link Extension tying in to existing light rail network at Angle Lake Station

The Federal Way Link Extension team is excited to share a major project milestone with the community! Work is now underway to connect the new Federal Way Link Extension power system, called the “overhead contact system”,  to the existing light rail network at Angle Lake Station. This process…

Night closures of northbound I-5 right lane and northbound I-5 on-ramp from NE 175th St

As early as Monday, May 20, Sound Transit will close the northbound I-5 right lane from NE 175th St to NE 195th St, including the closure of the northbound I-5 on-ramp from NE 175th St. Crews will be pouring concrete for the Lynnwood Link Extension.

Full closure of 46th Ave W

As early as Monday, May 20, Sound Transit’s contractor will continue working on utilities at 46th Ave W. This will require the closure of 46th Ave W south of 200th St SW. Detours will be provided (see map). The contractor has received a temporary noise variance to complete this work.

Nightly road closures of northbound Corliss Ave N from N 107th St to N Northgate Way

Starting as early as Monday, May 20, Sound Transit will be performing nightly road closures of northbound Corliss Ave N from N 107th St to N Northgate Way, including the closure of the northbound I-5 to Corliss Ave N off-ramp. These road closures are for side sewer work as a part of the future…

Westbound NE 175th St lane restriction for signal pole foundation work

As early as Monday, May 20, Sound Transit will perform nighttime lane restrictions on westbound NE 175th St. These lane restrictions will be utilized for signal pole foundation work on the northeast corner of the northbound I-5 on- and off-ramp intersection. This work activity is performed at night…

Center lane closure on 44th Ave W

Starting Monday, May 13, Sound Transit’s contractor will begin median demolition and paving on 44th Ave W. This will require closing the center lane on 44th Ave W, just south of 200th St SW. Detours for the left turn from 44th Ave W to 200th St SW will be provided (see map).

Full closure of 46th Ave W

As early as Monday, May 13, Sound Transit’s contractor will continue working on utilities at 46th Ave W. This will require the closure of 46th Ave W south of 200th St SW. Detours will be provided (see map). The contractor has received a temporary noise variance to complete this work.

Night closures of northbound I-5 right lane and northbound I-5 on-ramp from NE 175th St

As early as Tuesday, May 14, Sound Transit will close the northbound I-5 right lane from NE 175th St to NE 195th St, including the closure of the northbound I-5 on-ramp from NE 175th St. Crews will be pouring concrete for the Lynnwood Link Extension. 

Summary documents from fall 2023 Draft EIS comment period available online

To align federal and state environmental review processes for the Operations and Maintenance Facility (OMF) South project, Sound Transit and the Federal Transit Administration (FTA) published a National Environmental Policy Act (NEPA) Draft/State Environmental Policy Act (SEPA) Supplemental Draft…