  A look inside the tunnel, where we can see MudHoney’s trailing gear and the installed tunnel segments
Following an eight-week long planned pause for trailing gear installation, MudHoney, our 18-ft diameter storage tunnel boring machine (TBM), will resume tunneling early next year.
The storage tunnel location, also MudHoney’s route, was identified based on several criteria, including minimizing impacts to surrounding neighborhoods, transit corridors, utilities, and structures such as businesses and homes. To do so, MudHoney’s underground route will mostly follow public streets such as Shilshole Ave NW, Leary Way NW, and N 36th Street. For our residents north of the Ship Canal, MudHoney will be tunneling under the streets you travel and know best!
Although we tried to mostly stay within these public streets, MudHoney has a limited turning radius, it is over 14,000 feet long after all! The turn radius is based on how tight of a corner it can take without getting stuck. The segments we use to build the tunnel in tight corners are extra short to give our TBM the tightest turning radius possible.
For more information on how our tunnel will be built, take a look at our MudHoney fact sheet, and follow MudHoney’s journey on our website.
As always, we encourage you to check out our Flickr albums with recent construction photos, including images of our new tunnel.
Ballard & MudHoney
MudHoney reached a planned pause in October for trailing gear installation. MudHoney will resume tunneling activities early next year.
When tunneling starts again, you should anticipate:
- Truck deliveries of concrete segments and MudHoney equipment
- Tunneling activities
- Nighttime segment deliveries and tunnel spoils getting hauled off
- Noise and vibrations typical of a construction site
Crews are working 24 hours a day, 5 days a week, and will continue until MudHoney reaches Wallingford in late 2022. Weekend work may also occur.
Ground monitoring is ongoing along the tunnel alignment and is done from both inside MudHoney and on the surface.
East Ballard
Crews installed the temporary water main and will resume excavating and installing shoring for the large mechanical and electrical vault on NW 45th St.
During this time, you should anticipate:
- Heavy equipment in the area
- NW 45th St closed to traffic; vehicles must detour onto NW 46th St
- 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 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.
Fremont
Crews started jet grouting work in Leary Way NW in November. This work included lane reductions on Leary Way NW, between 1st Ave NW and NW 39th St, with an optional detour. After reopening all lanes for several weeks the lanes will be reduced again later this month to resume jet grouting work that will continue through February.
Also this month crews will be drilling piles to support water main work in Leary Way NW.
Connections for the water main work are expected to occur as soon as late December, which will require a temporary water outage during nighttime hours. If your service will be impacted, you’ll receive a door hanger with more information about 5 days prior to the outage.
Work on the 8-ft conveyance tunnel will resume next year after jet grouting is complete.
During this time, you should anticipate:
- Lane reductions on Leary Way NW December through approximately Feb. 2022 (see map with optional detour). We will continue to look for opportunities to open up the lanes whenever possible.
- Excavators working on site for utility installation work
- Truck traffic on Leary Way NW as trucks bring and remove materials to and from the site
- NW 36th St between Leary Way NW and 3rd Ave NW closed (through remainder of the project)
- Pedestrian detours on Leary Way NW, please follow all detour guidance on site
- Generator running during work hours to power equipment
- 2nd Ave NW, between Leary Way NW and NW Canal St, closed to vehicle and pedestrian traffic for sewer and diversion structure work at least through the end of the year
- NW Canal St is open to two-way traffic to allow access during this closure. Please do not park at the west end of NW Canal St to allow two-way traffic to turn around at the closure.
- 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.
Wallingford
Crews continue working inside the shaft.
During this work, you should anticipate:
- Trucks coming in and out of the site to deliver reinforcing steel and concrete
- Noise and vibrations typical of a construction site
Regular work hours will be Monday through Friday, from 7 am to 5 pm.
Queen Anne
Crews will resume excavating diversion structures for the conveyance pipe.
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 our hotline at (206) 701-0233. You can also find information online at spushipcanal.participate.online/.To support the community during active tunneling, we have changed our hotline hours to 24 hours a day, Monday through Friday.
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