The Port of Seattle and The Northwest Seaport Alliance have begun construction work to modernize Terminal 5 in West Seattle by early 2024.

In August 2019, crews begin in-water construction work. In-water work, including in-water pile driving, can only occur during a limited period from August 15, 2019 through February 15, 2020. This limited period for in-water work is put in place to minimize effects on migratory fish. Pile driving on land can and will occur outside of the August 15 to February 15 window.

Pile driving activities are restricted to occur during the following permitted work hours:

  • 8 a.m. to 5 p.m. during weekdays
  • 9 a.m. to 5 p.m. on Saturdays, and some Sundays*

*Read the full construction update for more specifics about Sunday work hours.

Updates about pile driving activities will be shared through the West Seattle Blog and Westside Seattle.


July 2019 Phase 1 construction begins

The first phase of construction begins in July 2019, with demolition of the north section of the dock, installation of new electrical infrastructure, pile driving and construction of the north segment of the dock. The completed north berth will include new crane rails, fendering, bollards and an underwater toe wall. A new primary substation will be constructed to supply power to the new cranes and provide shore power to vessels.

Phase 2 construction is expected to begin in the first quarter of 2021 and will include delivery of new cranes to the north dock and demolition and construction of the south portion of the dock. The completed south berth will include new crane rails, fendering, bollards and an underwater toe wall. Phase 2 will be followed by dredging of the north and south berths to a depth of minus 57 feet (current depth is minus 45 to 50 feet).


May 2019 Award of Construction Contract

The schedule calls for a construction contract to be awarded in May 2019. The groundbreaking will occur in July.

April 2019 Matson operations begin at Terminal 5 and lease approved by commissioners

In April, Matson Navigation, a domestic ocean carrier, will relocate from Terminal 25/30 to Terminal 5 (T5). Matson will remain at T5 during construction and will move to another terminal in 2021, before the new operators take occupancy of T5. Matson will handle less than 20 percent of the cargo volume that the previous operator handled at T5.

On April 2, 2019, Tacoma and Seattle port commissioners approved a lease agreement for Terminal 5 with SSA Marine and TIL, who will partner to operate the facility. The ocean carriers that will call at the terminal include Maersk Line and Mediterranean Shipping Company (MSC).

Construction will begin in 2019 and will be finished in 2023.
The full construction schedule is shown above with construction beginning in 2019 and finishing by 2023. 
Upgrades to the north and south dock areas are shown on a project map of Terminal 5, along with the area where berth deepening will occur.
Locations for Terminal 5 improvements and upgrades are shown above.