SeaTac Concourse D Annex

Seattle-Tacoma International Airport (STIA) Concourse D Annex is a two-story, 32,500 SF LEED Silver structure that includes steel and glulam king-post trussed roof, gate canopies, an elevated walkway and enclosed bridge, and a 7,000 SF mezzanine for mechanical and concessions. Under a design-build contract, this project had an accelerated schedule on a site within AOA operations. This addition to the airport will help to improve passenger congestion in the main terminal after Sea-Tac’s sixth record year for passenger traffic.

The first US airport terminal building to target LEED Silver certification, sustainable features include extensive daylighting, locally-sourced materials, reflective roofing materials to decrease he heat island effect, a rainwater management system to irrigate nearby landscaping, air curtains, and a radiant floor heating system. Ninety-five percent of the construction waste was recycled, and the goal to reduce airport congestion also reduces fuel needs, contributing to lower greenhouse gases.