Seattle Multimodal Terminal at Colman Dock Replacement


Washington State Department of Transportation


Seattle, WA







Civic & Public

Project Team
Joe Leysath
Senior Project Manager
Matthew Woo
Associate, Electrical Engineering
Peter Lekhakul
Senior Electrical Engineer
Andy Brown
Associate, Vice President
Carly Langer
Electrical Designer
A New Flagship Ferry Terminal for WSF's Largest and Busiest Hub

This major update to Seattle’s iconic waterfront addressed the age and seismic vulnerabilities of Washington State Ferries’ largest terminal serving Bremerton and Bainbridge Island. As part of a collaborative GC/CM team, we provided electrical engineering and ICT design for systems including new electrical power, electronic metering, grounding, lightning protection, communications, fire alarm, electronic security, public address, and 800 MHz ship-to-shore and emergency response radio communications.

The Colman Dock team also interfaced with the City of Seattle Seawall project to coordinate key related elements and utility services.

The new terminal building was constructed in two sections able to resist the design-grade earthquake at each complete phase of construction. The first section opened in 2019, with full terminal completion in November 2022.

We also provided design for an independent electronic security system  for the Passenger Only Ferry (POF) Facility, working directly with Washington State Ferries. We provided new electrical distribution equipment served from a new Seattle City Light service transformer; a new telecommunications closet; a dedicated fire alarm system; and a one-way public address system which will enable announcements from the terminal office to the interior and exterior passenger gathering locations.