Ship Canal Water Quality project update

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Work starts in Ballard this month

Map showing construction zone in Ballard

Now that early work is complete, we're ready to start the next phase of construction in Ballard. Our tunneling team is anticipated to start construction in late February 2020. For the first few months, crews will be:

  • Installing a 12’ high sound containment wall to help mitigate construction noise
  • Installing stormwater controls
  • Installing dewatering equipment
  • Removing trees onsite
  • Preparing the site to support heavy machinery - this may include compacting soils, paving asphalt access roads, tree removal, and laying gravel
  • Possible one-day lane closure on Shilshole Ave NW and 24th Ave NW for pipe work
  • Access to all buildings and businesses will be maintained 

Heavy equipment will move onto the site in April with the early stages of shaft construction starting in May.

Near-term construction impacts

  • Parking restrictions along the east side of 24th Ave NW so trucks can exit the work site (see map)
  • Short interruptions on Shilshole Ave NW for trucks entering the work zone, and 24th Ave NW for trucks exiting the site; please pay attention to flaggers
  • 24th Ave NW Pier will remain closed through 2024

View the full construction notice online.

Next up - Wallingford, East Ballard, and Fremont

We will be securing our site in Wallingford (N 35th St and Interlake Ave N) in March. A sound containment wall will be installed along the northern and eastern sides of the site and public parking will no longer be permitted. 

Work is anticipated to start in East Ballard (on NW 45th St between 11th Ave NW and 9th Ave NW and on 11th Ave NW just south of NW 45th St) and Fremont (near the intersection of Leary Way NW, NW 36th St and 2nd Ave NW) as early as April. We will be reaching out to nearby stakeholders over the next several weeks.

Please visit our website to learn more about initial work activities.

Shout out to our local businesses!

The City of Seattle’s Office of Economic Development recently launched its Legacy Business Program to celebrate small, local businesses that have made significant cultural contributions to their communities for 10 years or more. Know a business that deserves to be recognized? Nominate them by Feb. 14.

New system for email updates

Does this message look a little different than the ones you're used to? The City of Seattle has a new email system. All Ship Canal updates moving forward will have this look and feel. Add the email address "" to your address book to ensure these messages don't go to your spam folder.

Direct replies to this message will not be received. You can manage your email preferences using the links at the bottom of this message.

Contact us

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


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