The Port of Seattle and Alaska Airlines partnered to improve passenger experience through the creation of a new North Terminal at Seattle-Tacoma International Airport (Sea-Tac). The North Terminal Utilities Upgrade Phase I (NTUUP) is the first phase of the North Satellite Modernization Project.

The project included the extension of full-size mechanical utility piping to the North East end of the Sea-Tac International Airport. The extension increases the available heating and cooling capacity to support both current and anticipated expansions. Chilled water and steam and pumped condensate return piping was routed from the central plant to a new valve room located under the departures drive. The new pipe connects to various mechanical rooms throughout the airport. The new valve room also has the capacity for future connections.

NTUUP is adjacent to the Rental Car Facility shuttle bus pickup and drop off station and located on the arrivals drive, home to multiple baggage claim entrances. In order to alleviate disruptions JWF coordinated mechanical heating and cooling shutdowns, water main shutdowns, and traffic revisions around Port of Seattle operational requirements. JWF modified the bus station curbs to better suit the new temporary layout.

Understanding the criticality of maintaining open roads to the airport, JWF maintained two open lanes of traffic on the arrivals drive through construction. Given the close proximity to the arrivals terminal and the road, JWF worked to keep the public safe with proper barriers between operations and travelers. Road barricades created a barrier between travelling vehicles and construction hazards while fencing and temporary closure of smoking areas kept travelers at a safe distance from the project. Barricades were chosen to not only provide traffic protection but to also reduce the possibility of unwanted debris leaving the site. Black privacy screens and water barricades were also used to minimize impacts to the public.


Port of Seattle




Water Resources