Fremont to Queen Anne Water Main Replacement Project

Rendering of the project map
The City of Seattle will construct a new water pipe between Fremont and Queen Anne.

Project Description

This project constructed a new 24-inch wide drinking water main inside a utility tunnel that runs underneath the Ship Canal between Fremont and Queen Anne. The new main replaced an existing water pipe that served Seattle for nearly 100 years and was taken out of service in 2011.


The new water main runs underneath the Ship Canal from Queen Anne (near West Ewing Mini Park) and Fremont (near 2nd Ave NW and NW Canal St).

Project Results

In addition to conveying drinking water across the Ship Canal, the new feeder main will:

  • Improve drinking water service levels as far north as Ballard, west to Interbay and Magnolia, and to neighborhoods in the immediate vicinity including the base of Queen Anne hill on the east, north and west side, and Fremont
  • Improve water system pressure and fire flow (the flow rate of water from hydrants used by firefighters)
  • Ensure service reliability in the event other drinking water infrastructure is disrupted


Construction began in fall 2018 and was completed in fall 2019.

Related Information

SPU’s Ship Canal Water Quality project team will start construction in Fremont and Queen Anne next year. Visit the project website for more information about what will take place in your neighborhood and sign up for their listserv.

Public Utilities

Andrew Lee, General Manager and CEO
Address: 700 5th Avenue, Suite 4900, Seattle, WA, 98104
Mailing Address: PO Box 34018, Seattle, WA, 98124-5177
Phone: (206) 684-3000

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Seattle Public Utilities (SPU) is comprised of three major direct-service providing utilities: the Water Utility, the Drainage and Wastewater Utility, and the Solid Waste Utility.