The temporary lights in place have been up since November 2018, but the new, permanent lights will go into use this weekend.
Beginning tonight at 11:00 pm, the 116th overpass will be fully closed, and should re-open at 8:00 am on Sunday.
All of this construction is to build a Single Point Urban Interchange (or SPUI, pictured above) which will make getting through the intersection faster and more efficient and to accomplish it, the Tulalip Tribes partnered with the City of Marysville, WSDOT, Federal Highway Administration, and the Bureau of Indian Affairs.
WSDOT’s site says that “The SPUI will reduce congestion because one signal will control all crossing traffic. This allows more drivers to turn in a single cycle, reducing the backups that occur as traffic waits for turn signals.”
Besides helping the local get around a little faster, the project was also designed with the Outlet Mall and Tulalip Resort Casino in mind; visitors who remember their trip to the TRC and shopping will be more likely to revisit if they aren’t dreading the traffic snarl near the interchange.
At this time, construction is slotted to end in the Spring of this year.
From the WSDOT website, previous phases included:
Extended Quil Ceda Boulevard northerly from the intersection with 116th Northeast to 34th Avenue Northeast.
A portion of 34th Avenue Northeast was realigned to the west to intersect Quil Ceda Boulevard in a roundabout configuration.
Culverts under 34th Avenue Northeast and 116th Street Northeast were replaced.
Quilceda Creek was realigned.
A mitigation site for the entire interchange project was completed.
The 3-lane 116th Street Northeast bridge over I-5 was reconstructed with a 6-lane span.
Safety improvements such as temporary signals were installed as well as retaining walls and noise walls.