May 17, 2019
Construction Award: Public Building
$20 million to $50 million
Photo provided by The Walsh Group
The Sea-Tac Airport Concourse D Annex by Walsh has six gate waiting areas, concessions, charging stations, free Wi-Fi and restrooms.
Sea-Tac Airport Concourse D Annex
Location: SeaTac
General contractor: The Walsh Group
This design-build project included the construction of a 32,400-square-foot LEED Silver building connected to Sea-Tac Airport’s main-terminal Concourse D. The building has six gate waiting areas, concessions, charging stations, free Wi-Fi and restrooms. It has a 7,400-square-foot mezzanine level, a curved roof, a sloped walkway to the ground level and departing gates. The annex is designed to complement the Gina Marie Lindsay Arrivals Hall and Concourse A. It will serve “hardstand” passengers, who have to board shuttles to get to planes in lieu of a loading bridge. The annex uses space more efficiently, reducing the amount of time passengers spend waiting for planes at a gate. The project included development and implementation of both static and dynamic signage. Wayfinding included technologically advanced systems, as well as traditional signage applications, providing information that clearly guides the public through the new and integrated facilities.
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