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SR 525 - Mukilteo Multimodal Terminal

Mukilteo Ferry Terminal aerial photo

The existing Mukilteo terminal is aging and in need of major repairs. Visit our Flickr page to view more project photos.

The Mukilteo/Clinton ferry route is WSF's busiest route for vehicle traffic; carrying over 4 million riders per year.

typical ferry terminal structure schematic
Typical ferry terminal structures (enlarge)


May 2016

  • You can now view 60-percent design documents in our project library. If you have any questions or comments, please contact Laura Labissoniere Miller at or 425-367-8997.
  • A summary from our February open houses is now available in our project library. In the summary, you'll find details about the events and the feedback that was shared.
  • The first phase of construction, to remove the tank farm pier and prepare the site for the new ferry terminal, is complete - one year ahead of schedule. Thank you for your patience during construction.
  • View the latest project fact sheet or subscribe to our email listserv for to learn more about the project.

The Mukilteo Multimodal Project relocates the Mukilteo ferry terminal to the tank farm site, one-third of a mile east of the existing terminal. The project includes a new passenger and maintenance building, a supervisor’s building, transit center and four new toll booths. Its location near the Sounder commuter rail station improves transit connections. Removal of the tank farm pier eliminates thousands of tons of toxic creosote-treated debris from Puget Sound.

Why is WSDOT considering improving or relocating the Mukilteo Terminal?
The Mukilteo/Clinton ferry route is part of State Route (SR) 525, the major transportation corridor connecting Whidbey Island to the Seattle-Everett metropolitan area. It is WSF’s busiest route for vehicle traffic and has the second highest annual ridership, with over 4 million total riders in 2015. During the afternoon peak commute period, walk on ridership is expected to increase 124 percent (2010-2040).

The Mukilteo terminal has not had significant improvements since the early 1980s and components of the facility are aging and do not meet current seismic standards. The current terminal layout makes it difficult for passengers to get in and out of the terminal and contributes to traffic congestion, safety concerns and conflicts between vehicle and pedestrian traffic. The new terminal will improve operations and multimodal connections and safety.

The End Result
The new Mukilteo ferry terminal will provide passengers with improved transit connections, safer and more efficient loading facilities, and improve access to the Mukilteo waterfront.

Project Benefits
The new terminal will:

  • Improve safety and accessibility for pedestrians, vehicles and bicycles
  • Improve the efficiency and reliability of ferry operations, including vehicle and passenger loading and unloading
  • Improve transit connections for riders who travel without a car and help ensure reliable multimodal connections 
  • Reduce the ferry-related congestion along Mukilteo’s central waterfront
  • Provide public access to the Mukilteo waterfront

What is the project timeline?

  • 2010-2014 – Environmental process
  • 2014-2016 – Final design
  • June 2015-February 2016 – Construction phase 1
  • 2017-2019 – Construction phase 2

Financial Information

The Legislature recently approved funding to complete the project. The Mukilteo Multimodal Project will cost approximately $130 million and will be paid for by a mix of federal and state funds.

How can I get more information?
Call the project hotline at 425-367-8997 or email

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