Night work for on ramp from eastbound State Route 104 to northbound I-5

Publish Date

As early as Monday, March 2, Sound Transit's contractor will begin night work on the ramp from eastbound State Route 104 to the northbound ramp of Interstate 5. Both the on and off ramp will be closed while this work is being done. Detours will be provided (see map). The contractor has obtained a Temporary Noise Variance to complete this work.


There will be a storm drain reroute and preparatory work for a temporary signal.


Monday, March 2, through Thursday, March 12. Monday – Thursday 8 p.m. to 4 a.m. This work will be done at night only.


Eastbound SR 104 onto the northbound I-5 ramp.


  • There will be posted signs for the detours (see map).
  • Plan ahead, leave early and allow extra time to reach your destination.
  • Please be prepared for delays while this work takes place.
Map of Interstate 5 ramp closures and detours near the future Mountlake Terrace Station.