City Light System Reliability Work to Affect Traffic on I-5 from July 30-31

Seattle City Light crews plan to maintain the reliability of the electrical system by relocating existing overhead power lines on Interstate 5 near Northeast 155th Street in Shoreline. This work will support Sound Transit’s Lynnwood Link Extension project.

Seattle City Light crews plan to maintain the reliability of the electrical system by relocating existing overhead power lines on Interstate 5 near Northeast 155th Street in Shoreline. This work will support Sound Transit’s Lynnwood Link Extension project.

To complete this work safely, crews must intermittently conduct rolling slowdowns of traffic in both directions of I-5 to ensure safe work operations and passage for motorists. The work will start late Tuesday night on July 30. Traffic will be intercepted and escorted at slow speeds for up to 15 minutes between 44th Avenue West (Lynnwood) and Northeast 70th Street (Seattle) as crews pull overhead feeder cables across the highway. Traffic will return to normal speeds once past the work area.

Rolling slowdown details:

Occurring from 11:59 p.m. to 4 a.m. beginning Tuesday, July 30 through the morning of Wednesday, July 31:

  • Washington State Patrol troopers and contracted crews will intermittently intercept and escort southbound I-5 traffic through the work area beginning at 44th Avenue West in Lynnwood. The same will occur for northbound traffic beginning at NE 70th Street in Seattle.
  • Traffic using the following on-ramps to I-5 will also be affected:
    • On southbound I-5: 44th Avenue, West (Lynnwood), 220th Street SW (Mountlake Terrace), State Route 104 (Shoreline), 175th Street SW
    • On northbound I-5: 5th Avenue NE (Shoreline), NE Northgate Way (Seattle), NE 80th Street (Seattle), NE 70th Street (Seattle)

Drivers should expect delays and consider using alternate routes during construction.

The relocated power lines will maintain electrical reliability for customers. This work supports Sound Transit’s Lynnwood Link Extension project, which will extend light rail into south Snohomish County and serve stations in Shoreline, Mountlake Terrace and Lynnwood. For more information, please visit soundtransit.org/system-expansion/lynnwood-link-extension or seattle.gov/light/atwork.