Long-term closure of 1st Avenue NE at N 145th Street

N 145th Street Corridor/I-5 Interchange Project: Long-term closure of 1st Ave NE at N 145th St

Starting as early as Wednesday, February 19, 2025  crews will close a section of 1st Ave NE south of the N 145th St intersection. 

This closure is necessary to complete critical construction work for the N 145th St Corridor and I-5 Interchange project. 

During this time, through traffic will not be permitted, only local access will be allowed.

• When: Starting as early as Wednesday, February 19 through Wednesday, April 30. Please note the construction schedule is subject to change.
• Where: Work will happen on 1st Avenue NE south of the N 145th Street intersection. See attached map for details. The closure will prevent access to 1st Avenue from N 145th Street but will not impact the rest of 1st Avenue or the surrounding neighborhoods.
• More: Construction activities will include wall construction; intersection and signal improvements; and installation of sewer and storm systems. Please follow all signage and move through the area carefully during construction.

Contact us:

• Email: 145thproject@shorelinewa.gov 
• 24-hour construction hotline: 206-899-5127

Learn about the project and subscribe to email updates: Engage.ShorelineWA.gov/145Corridor