Turner Construction Company has reached a milestone on the $260-million C concourse expansion at Seattle-Tacoma International Airport, completing the steel topping out and marking the end of vertical construction.
The 226,000-square-foot, six-story renovation project, which adds four levels to the existing building, offers enhancements to the passenger experience. The upper floors will introduce expanded dining and retail options, additional seating and a 1,300-square-foot extension to the passenger waiting area. Key features include a rooftop photovoltaic array, a meditation room, a nursing room and two airfield observation decks.
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As the first SEA project to implement the Port of Seattle’s Sustainable Evaluation Framework, the expansion aligns with the Port’s Century Agenda sustainability goals. Initially targeting LEED Silver certification, the project is on track to achieve LEED Gold, reflecting its integration of energy-efficient systems and sustainable elements.
The project is scheduled for substantial completion in 2026.
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