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

Nighttime closures of off-ramp to westbound State Route 104 and off-ramp to SR 104 eastbound

Publish Date

As early as Monday, Aug. 24, Sound Transit's contractor will continue night work at the State Route 104 and northbound Interstate 5 interchange. Both the on and off ramps will be closed while this work is underway. Detours will be provided (see map). The contractor has obtained a Temporary Noise Variance to complete this work. This work is weather-dependent and may need to be rescheduled.

What

Work to prepare for future guideway columns from exit 177 to Mountlake Terrace. Work will include mobilization/demobilization of equipment, electrical work, striping, earthwork, drilling, concrete forming, trucking and related activities.

When

Work will occur, Monday, Aug. 24, through Friday, Sept. 4., Monday – Friday 10 p.m. to 7 a.m. Nighttime closures and detours will be in effect from Monday, 8 p.m. – Friday, 4 a.m.

Where

  • Northbound I-5 off ramp to Westbound SR 104.
  • Westbound SR 104 to on ramp for Northbound I-5.

More

  • 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 nighttime closures of the off-ramps to westbound and eastbound State Route 104.