SR 525 - Mukilteo Multimodal Terminal: What to expect during construction

See the latest construction photos.

October construction update

We're one year away from the opening of the new Mukilteo terminal. Work on the passenger and maintenance buildings, toll booths, holding and exit lanes, First Street, promenade, and underground utilities is proceeding on schedule. In-water work will begin this month as Manson Construction is mobilizing now. The new passenger building, holding lanes, and overhead bridge for walk-on passengers are designed to handle the projected ridership growth for this route.

The work site is a busy place; here's what's going on now: 

Roof goes up in time for fall rain

Mukilteo CLT roof panels

Crews finished lowering 84 roof panels, measuring 10-feet by 20-feet each, onto the new Mukilteo ferry terminal building in early October. The panels are constructed of cross-laminated timbers, or CLT, which is wood stacked crosswise and bonded with structural adhesives. CLT panels provide the strength of traditional building materials but with a lower environmental impact, in keeping with our goal on this project to be “light on the earth” and LEED Silver-certified.

Here's a look at the glulam beams (below) that support the shed-style roof. 

Mukilteo roof and glulam beams

From this angle looking at the southwest side of the building (below), it's easy to imagine the gently sloping, south-facing roof that will be covered in solar panels to collect and store energy for use in the terminal. 

Mukilteo terminal Sept 2019

Pedestrian trail to reopen
The popular pedestrian trail that passes by the construction site, closed in late March, is set to re-open to pedestrians this month. People are eager for that, we know! This portion runs from the Sounder station through the end of the work zone in the area that will be the new First Street when the terminal opens next year. Please obey signs posted at the gate near NOAA and at the Sounder station that indicate areas closed off to the public. Please do not cross the train tracks to access the beach. This is a busy route for train traffic. 

Oodles of piping
It’s no surprise that a ferry terminal requires a lot of piping. Here’s just some of what will go into the new Mukilteo terminal – pipes for the water main, storm sewer, and sanitary sewer are being installed now.    

Piping to be installed

The Sounder roundabout
To build the new First Street, crews have reconfigured the roundabout in front of the Sounder commuter train station. There is still be space for vehicles to turn around there, but it's been changed to make way for construction. This new configuration will remain in effect until the new First Street opens next year.  

General work hours: Weekdays 7 a.m. to 6 p.m. and Saturdays 9 a.m. to 5 p.m. We don’t anticipate work on Sundays.

No in-water work happens during the fish migration window – mid February through July – to protect migrating fish, in accordance with National Marine Fisheries Service, United States Fish and Wildlife, and Washington State Department of Fish and Wildlife requirements.

Construction lights will be directed away from our terminal neighbors.

Looking ahead to a terminal designed to be LEED Silver-certified and light on the earth

Mukilteo terminal design / Mukilteo green design thumbnail

This site that formerly housed an abandoned U.S. Air Force fueling pier will soon be home to a building that’s light on the earth, integrating solar panels, natural ventilation, rain water harvesting, enhanced stormwater treatment, native plantings, and other green design elements into its design. This honors our commitments to tribal partners and the city of Mukilteo. Tribal cooperation was key to the project’s design. Terminal, toll booths, and other structures incorporate tribal cultural elements.

The project is one part of a larger redevelopment plan for Mukilteo's waterfront, which will include a replacement of the nearby NOAA research station, improved beach and trail access, the addition of mixed-use buildings, and more.