 How we stop the stink
 Crews hoist a carbon filter that will be used to control odor at the Fremont site.
Our completed tunnel will eventually hold and store stormwater and some sewage during large rain events. You may think that would be really smelly, right? Not so! We are installing carbon filters for odor control. These filters are filled with activated carbon (fancy carbon), similar to the material used in a Britta water filter. Air coming from the tunnel will be funneled through these filters before it’s released. Activated carbon will catch decomposing organic material left in the air, which is typically the culprit for any smelliness you would otherwise notice.
Fun fact: the word “carbon” originated from the Latin word “carbo” for coal. For thousands of years humans knew carbon as coal until in 1772 Antione Lavoisier showed that it is its own unique chemical entity. Lavoisier was the first to identify carbon as an element in his textbook Traité Élémentaire de Chimie published in 1789.
Visit our project website to learn more about the project and check out our Flickr albums for recent construction photos.
Ballard
Crews continue to dismantle, clean, and remove the equipment that was needed to build the tunnel.
You should anticipate:
- Nighttime truck movements may be necessary to remove large equipment over the next few months
- Noise and vibrations typical of a construction site
Crews are now working one 10-hour shift, five days a week. Some work may occur on Saturdays.
East Ballard
Crews continue working on the replacement of a segment of water main in NW 45th St between 11th Ave NW and 9th Ave NW. Crews are working below ground to build the adit between the tunnel and the vertical shaft.
Lane closures and detours:
- NW 45th St between 11th Ave NW and 9th Ave NW remains closed through spring 2024
- The Burke Gilman trail detour remains in place until spring 2024
- 11th Ave NW remains open with two lanes of traffic in each direction. Flaggers may be present periodically during daytime hours to coordinate vehicles and construction traffic through the intersection.
You should anticipate:
- Heavy equipment in the area
- Noise and vibrations typical of a construction site
Regular work hours will be Monday through Friday, from 7 am to 6 pm. Night and weekend work may occur.
Fremont
Crews continue building the permanent structure inside the shaft and installing conveyance pipes that connect to the storage tunnel. They also continue building the large, underground mechanical and electrical vault.
Local closures and detours:
- Leary Way NW has opened back up to two lanes of traffic in each direction
- On 2nd Ave NW, between Leary Way NW and NW Canal St, the street remains closed to vehicle and pedestrian traffic through mid-2024
- NW Canal St is open to two-way traffic during this closure
- NW 36th St, between Leary Way NW and 3rd Ave NW, remains closed through mid-2024
- Pedestrian detours are in place on Leary Way NW; please follow all detour guidance
You should anticipate:
- Truck traffic on Leary Way NW as trucks bring materials and equipment to and from the site
- Concrete trucks entering and leaving the site
- Fans running during work hours to provide fresh air to crews working in the shaft
- Heavy equipment in the area
- Noise and vibrations typical of a construction site
Regular work hours will be Monday through Friday, from 7 am to 6 pm; and some Saturdays from 9 am to 6 pm.
Wallingford
Crews are installing conveyance pipe in the intersection of Stone Way N and N 35th St. Another crew is installing the segment of conveyance pipe between Interlake Ave N and the Wallingford shaft site. Crews also continue to build the permanent walls inside the shaft and the above-ground electrical building.
We understand that traffic is a challenge in this area. We continue to keep an eye on neighborhood impacts and add new signage for detours and safe access to businesses. Businesses are open and ready to serve the community. Please support local businesses and follow all detour signage and safety directions when traveling through the work area.
The pedestrian crossing on the south side of the intersection of Stone Way N and N 35th St is closed. Pedestrians need to follow the approved detour route and cross Stone Way N at N 34th St.
N 36th St between Wallingford Ave N and Stone Way N is restricted to local access only. Please follow the approved detour map when driving in the area.
See our updated detour maps for vehicles, cyclists, and pedestrians.
N 35th St closure vehicle detour:
- Traffic is detoured via N 40th St and Wallingford Ave N, and via Woodland Park Ave N and N 34th St
- The all-way stops remain in place at Woodland Park Ave N at both N 35th St and N 34th St, and at Wallingford Ave N and N 35th St
- Stone Way N between N 34th St and N 35th St remains closed to vehicles and bicycles
- Please adhere to Road Closed, Local Access Only, and Traffic Revision Ahead signage and follow marked detour routes
N 35th St closure bicycle detour
- Bicyclists are detoured to the west on N 35th St and Woodland Park Ave N
- Access to the Burke Gilman Trail is on N 34th St at Stone Way N and at Troll Ave N
- Please dismount and walk if you use the sidewalk
You should anticipate:
- N 35th St between Stone Way N and Interlake Ave N and the intersection of N 35th St and Stone Way N are closed until spring 2024
- Trucks coming in and out of the site
- Heavy equipment in the area
- Vibrations typical of a construction site
- Truck traffic from the North Transfer Station hauling waste away from the station beginning at 5 am (for up to four hours), 7 days a week. Flaggers will be on site to help control traffic and direct trucks out of the gate if needed.
- Road and periodic sidewalk closures
- Temporary bus stops on Woodland Park Ave N are relocated; Metro bus routes 31, 32, and northbound 62 detoured. Southbound bus route 62 is unchanged. Please view service advisories on King County Metro’s website.
Regular work hours at the Wallingford shaft site will be Monday through Friday, from 7 am to 6 pm. Crews also work a second shift in the tunnel and there will be occasional surface work at the shaft site.
Regular work hours on N 35th St and Stone Way N will be Monday through Friday, 7 am to 6 pm. Night and weekend work may occur periodically.
Queen Anne
Crews continue installing utilities at the site.
Local closures and detours:
- Localized Ship Canal Trail detour at least through mid-2024 (see map). Please continue to remain alert when moving through this area.
- West Ewing Mini Park parking closure through mid-2024
You should anticipate:
- Trucks coming in and out of the site
- Heavy equipment in the area
- Noise and vibrations typical of a construction site
Regular work hours will be Monday through Friday, from 7 am to 6 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.
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