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Seattle Multimodal Terminal at Colman Dock Project

project status: construction
The Seattle terminal today

Layout of existing faclity
 Layout of the existing facility

Conceptual design of the new facility   Conceptual design of the new facility. The design of the entry building and elevated pedestrian connection will be further reviewed to adjust to approved funding.

Interior view of the terminal
 Interior view of the terminal


August 2017

  • On Friday, Aug. 11, we reached our first project milestone with the completion of a temporary passenger-only ferry terminal on the north side of the dock at Pier 52.
  • The King County Water Taxi and Kitsap Transit Fast Ferry will operate out of the temporary location until fall 2018, when the new facility is complete.
  • Work to build the new passenger-only ferry facility on the south side of the dock is now in progress.

Getting to the dock

  • The area in front of Colman Dock between Madison St. and Yesler Way is now re-striped and used as vehicle lanes for tollbooth access and ferry queuing (1mb pdf).
  • Motorcycles, trucks longer than 40-feet and vanpools may enter the dock at Yesler Way instead of Madison St.

Learn more about construction


Washington State Ferries is replacing the aging and seismically vulnerable parts of Colman Dock in Seattle in order to maintain its critical role as a regional multimodal transportation hub.

Why is WSDOT replacing the Seattle Multimodal Terminal at Colman Dock?

Colman Dock in Seattle is WSF’s largest ferry terminal and supports transportation across Puget Sound between downtown Seattle and communities in Kitsap County and the Olympic Peninsula. It serves commuters, tourists, commercial vehicles, walk-on passengers and bicyclists. In 2016, more than 9 million people traveled through Colman Dock including more than 5.5 million foot passengers.

Key components of Colman Dock are aging and vulnerable to seismic events. The layout of today’s facility also creates safety concerns and operational inefficiencies due to conflicts between vehicles, bicycles and pedestrian traffic.

The End Result

Key project elements include:

  • Replacing the existing timber trestle portion of the dock with a new concrete and steel trestle
  • Replacing the main terminal building
  • Replacing the passenger-only ferry facility on the south edge of Colman Dock with funding from King County
  • Constructing a new elevated walkway between the terminal building and the passenger-only ferry facility
  • Replacing the overhead loading facility on the northernmost slip
  • Adding a bicycle entry and holding area north of Marion Street
  • Maintaining an elevated connection between the terminal building and the Marion Street Bridge 
  • Providing stairs and elevators to connect the facility to Alaskan Way
  • Mitigating for additional overwater coverage* 

*While avoidance and minimization of new overwater coverage was a key goal of the project, the new facility will increase the overwater footprint by approximately 5,200 square feet. Mitigation for this increase in overwater coverage will be achieved by removing overwater coverage from a neighboring pier owned by WSDOT.

Project Benefits

The project will:

  • Ensure that the Colman Dock facility can continue to provide safe and reliable ferry service between Seattle and communities in Kitsap County and the Olympic Peninsula
  • Improve safety by meeting current seismic standards
  • Reduce conflicts between vehicles, bicycles and pedestrians and improve operational efficiencies
  • Improve pedestrian circulation and accessibility
  • Remove 7,400 tons of creosote-treated timber piles from Elliott Bay
  • Open up an area of shoreline and near-shore habitat
  • Provide stormwater treatment for all new and replaced areas of the trestle
  • Provide opportunities for remediation of contaminated sediments

What is the project timeline?

  • 2012-2015 – Environmental process/preliminary design
  • 2015-2017 – Final design and permitting
  • 2017-2023 – Construction

Project Construction (summer 2017 - early 2023)

Crews are already doing work at the dock to prepare for major construction activities that will start as soon as August 2017. Construction will continue through early 2023 and the terminal will remain open throughout construction.

While ferry operations will be maintained throughout construction, customers can expect changes to how vehicles, passengers and bicycles load and unload. Customers and terminal neighbors can also expect construction noise, vibration and odor. The noisiest construction activity will be pile driving necessary to build the new dock. This work will be limited to daylight hours, between 8 a.m. and 5 p.m., August through mid-February. Some nighttime work to complete other construction activities may also be needed. Removal of creosote-coated timber piles can also cause vibration and odors. Our contractor will use best management practices to minimize these impacts.

WSF will continue to coordinate closely with other Seattle waterfront projects, including the Seawall Replacement project, Waterfront Seattle, and Alaskan Way Viaduct Replacement Program throughout construction.

Disadvantaged business enterprise (DBE) program

WSF has chosen the General Contractor/Construction Manager delivery method for the project. Hoffman-Pacific, a Joint Venture, was selected as the GC/CM in fall 2015 and has committed to maximizing opportunities for DBE firms. WSDOT has established a DBE goal of 12% of the project’s Maximum Allowable Construction Cost (MACC).

For questions about DBE opportunities on this project:
Andrew Powell, Hoffman-Pacific Project Manager

For information about certification and WSDOT’s DBE supportive services:
WSDOT Office of Equal Opportunity

Financial Information

Project signage will reflect the cost of construction engineering, project bid award and sales tax.

$350 million dollars in federal, state and local funding has been appropriated for this project. King County provided funding for replacement of the passenger-only ferry facility. With secured funding, WSF can move forward with replacing the seismically-vulnerable elements of the facility to preserve Colman Dock’s core functions. In addition, the legislature directed WSDOT’s Office of Innovative Partnerships to complete a study of public-private financing opportunities for the proposed entry building by November 2017.

How can I get more information?
Project Communications Team

If you need this information translated, please call 206-922-6267.
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