  Our 8-ft conveyance tunnel boring machine was delivered and lowered into the shaft in Fremont, where its tunneling journey will begin.
Our 8-ft conveyance tunneling boring machine (TBM) has arrived in Fremont this week. This smaller TBM will dig from Fremont to Queen Anne, connecting Queen Anne’s wastewater basin to the larger storage tunnel. It will sit in the Fremont shaft until tunneling begins in a few weeks.
To learn more about the project, visit our project website. We’ve updated our Flickr albums with recent construction photos, including more great photos of MudHoney in the Ballard shaft.
Ballard
Crews are wrapping up MudHoney’s assembly. The 18-ft storage tunnel boring machine (TBM) is located at the bottom of the shaft in Ballard and currently in its launch position. Crews are preparing for the main tunneling operations, expected to begin this summer. Until then, you can expect:
- More heavy equipment, such as cranes, to arrive on site, potentially at night.
- Truck deliveries of paving material, concrete, and equipment for MudHoney and tunnel activities. Some of these deliveries may take place overnight.
Crews have begun working extended shifts from 6 am to 2 am. Weekend work will also occur.
East Ballard
Crews will finish ground improvement work on NW 45th St this week! Following equipment demobilization, a large drill will arrive to install dewatering wells and steel beam ground support. During this time, you should anticipate:
- NW 45th St closed to traffic; vehicles must detour onto NW 46th St.
- In early July, 11th Ave NW will reduce to single lane traffic, controlled by flaggers during the day and traffic lights at night.
- Burke-Gilman Trail users remain detoured to the north side of NW 45th St. Flaggers will help direct traffic during daytime working hours. Please follow all detour guidance on site. For safety, bicyclists should either dismount or cross train tracks at a 90-degree angle. Please use extra caution in wet weather as ramps and tracks may be slippery.
- Noise and vibrations typical of a construction site.
Regular work hours will be Monday through Friday, from 7 am to 5 pm. Night and weekend work may occur.
Excavation for pipe and structure work in 11th Ave NW will start this summer after the ground improvement work is complete. In addition, crews will perform a water main bypass in July that will require a short, temporary water outage. If your service will be impacted, you'll receive a door hanger with more information.
See anticipated traffic impacts through 2021 on our website.
Fremont
Over the next few weeks, crews will continue utility work in NW 36th St and prepare the site for equipment to support our 8-ft conveyance tunnel boring machine. This tunneling work is expected to begin early July. Until then, you should anticipate:
- Dump trucks and excavators working on site and an uptick in traffic in Leary Way NW as trucks haul away excavated material and bring materials to the site.
- NW 36th St between Leary Way NW and 3rd Ave NW closed (through remainder of the project).
- Pedestrians detoured to the north side of Leary Way NW.
- Generators running intermittently to power the dewatering pumps.
- 2nd Ave NW, between Leary Way NW and NW Canal St, closed to vehicle and pedestrian traffic for sewer and diversion structure work through the end of the year.
In the coming weeks, crews will be working intermittently in Leary Way NW on a new water main. This work will require some lane closures on Leary Way NW and a short, temporary water outage. If your service will be impacted, you'll receive a door hanger with more information.
Regular work hours will be Monday through Friday, from 7 am to 5 pm. Night and weekend work may occur.
Wallingford
Crews completed excavation of the 38-ft diameter shaft and poured the 11-foot-thick base slab last Saturday. Next, crews will construct the lower part of the liner wall inside the shaft.
During this work you should anticipate:
- Trucks delivering reinforcing steel
- Concrete delivery and placement
Normal work hours are Monday through Friday, from 7 am to 5 pm.
Queen Anne
The shaft interior is complete. Crews will soon begin installing temporary shoring for construction of the diversion structures. During this time, you should anticipate:
- Trucks coming in and out of the site.
- Noise and vibrations typical of a construction site.
- The West Ewing Mini Park parking lot to remain closed through mid-2023.
- A localized Ship Canal Trail detour through summer 2022 (see map).
Regular work hours will be Monday through Friday, from 7 am to 5 pm. Night and weekend work may occur.
Contact us
Please email SPU_ShipCanalProject@seattle.gov with questions or comments or call (206) 701-0233. You can also find information online at spushipcanal.participate.online/.
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