Ship Canal Water Quality project update

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Dear neighbors,
Last week, new temporary art by Kalee Nelson and Crystal Christopherson was installed on our Wallingford screen wall. Elevating awareness of Missing Murdered Indigenous Women is the key goal of this temporary installation that includes a large scale mural featuring traditional formline design of orcas. Learn more about this piece and the others that will be installed soon.

Temporary art mural installed on Wallingford screen wall


Slurry wall construction continues throughout the summer. During this time, you should anticipate:

  • Heavy truck traffic on Shilshole Ave NW and 24th Ave NW; please pay attention to flaggers.
  • Parking restrictions along the east side of 24th Ave NW so construction trucks can exit the work site.
  • Noise and vibrations related to excavation and concrete pours.
  • Longer than normal working hours; crews will be working nights and weekends. Noise levels will be monitored.

East Ballard

Diagram showing traffic control in East Ballard

Crews are starting soil stabilization.

Through late December, you should anticipate:

  • NW 45th St to be closed to traffic; vehicles must detour onto NW 46th St.
  • 11th Ave NW to allow two-way traffic via one lane controlled by flaggers during work hours.
  • Burke-Gilman Trail users to be detoured to the north side of NW 45th St; flaggers to help direct traffic. Please follow all detour guidance on site. Bicyclists must cross train tracks at 90-degree angles.
  • Noise and vibrations typical of a construction site.

See anticipated traffic impacts through 2022 on our website.


Over the next few weeks, crews will install a new water line and storm drain and begin excavating guide walls for shaft secant pile construction.

You should anticipate:

  • NW 36th St between Leary Way NW and 3rd Ave NW to be closed for the remainder of the project.
  • Pedestrians detoured to the north side of Leary Way NW.
  • Short duration traffic disruptions on Leary Way NW (estimated to be less than 6 hours) while crews drill potholes to confirm the location of existing utilities.
  • Two days of water main work in the intersection of Leary Way NW and NW 36th St. Please pay attention to signage on site.
  • Some residents and businesses to experience temporary water shut offs during water main work. If your water service will be impacted, you will receive a door hanger from our crews five days in advance. Learn how to prepare for a water shut off (translations available)
  • Noise and vibrations typical of a construction site.

See fact sheet and map.


Crews will begin construction at our Wallingford site as early as mid-August. For the first several weeks of construction, crews will:

  • Install stormwater control and soil monitoring equipment.
  • Remove the existing chain link fence, gate, posts and stairs and install new site security fence.
  • Remove existing asphalt, concrete and some trees.
  • Remove existing utilities.
  • Excavate and remove contaminated soils.

You should anticipate:

  • The eastern sidewalk on Interlake Ave N to be closed near the work site.
  • Impacts to the northbound traffic lane on Interlake Ave N. Please pay attention to signage on site.
  • Increased truck traffic through the area.
  • Typical noises/vibrations related to construction.

Regular work hours will be Monday through Friday, 7 am to 5:30 pm. Night and weekend work may occur to maintain progress.

See project fact sheet and map.

Queen Anne

Diagram showing Ship Canal Trail detour in Queen Anne

Crews will remove existing asphalt, gravel and utilities as needed and a revised Ship Canal Trail detour will begin as early as mid-August.

We heard some community concerns about our previously proposed trail detour, so we worked with our contractor to move it just to the south of the existing trail through the adjacent parking lot near Seattle Pacific University/West Ewing Mini Park. See photo for approximate route.

The detour will be about 200 feet long and will be on a fully paved, 8-ft wide asphalt path that allows for two-way bike traffic. Trail users will be expected to yield to traffic on 3rd Ave W (same as now). We anticipate this trail detour to last until summer 2022.

Additional impacts you should anticipate include:

  • The West Ewing Mini Park parking lot to be closed. This closure is anticipated to last through mid-2023.
  • Noise and vibrations typical of a construction site.
  • Equipment being staged in the area.

Contact us

Please email with questions or comments or call (206) 701-0233. You can also find information online at


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