📋 Tender Overview
Estimated Investment : Between $240m and $500m
Scope :
Port of Seattle, the owner of the Seattle-Tacoma international airport (SEA), has announced the C Concourse expansion project to improve passenger traffic circulation and enhance airport experience.
The project is estimated to require an investment of between $240m and $500m. The Port of Seattle Commission has approved $340m for the airport expansion project, which is subject to revision as the project progresses.
Early works on the project are expected to begin in summer 2022, and major construction work is scheduled to begin in mid-2023. The project is expected to be completed in 2027.
C Concourse expansion project details
The C Concourse expansion project will span across the C and D Concourses of the Seattle-Tacoma International Airport. It will add four additional floors above the existing C Concourse building, increasing the size of the 81,000ft² (7,525m²) building to 226,530ft² (21,045.3m²). Each new floor plate will span an area of 27,000ft² (2,508.3m²).
An additional 5,000ft² (464.5m²) will be added to the existing building where a new loading deck will be built. The airport expansion will also include office space for airport businesses, airlines and the Transportation Security Administration (TSA).
The project also includes a new 20,000ft² (1,858m²) Alaska Airlines lounge, which will serve as the main lounge for passengers departing from the C and D concourses. The airline will also invest $7m to upgrade its lounges at the airport. The first phase will upgrade the existing lounge at C Concourse by adding approximately 60 seats.
The second phase will include the renovation of its lounge at D Concourse, which was opened more than 40 years ago. The expansion will add 30% more space to the concourse, bringing new product features including a new bistro bar and a better flow for the area.
Amenities at the airport expansion project
The expansion project will add 145,530ft² (13,520m²) of dining and retail areas, apart from amenities such as interfaith prayer and meditation room, and a nursing suite.
The Grand Stairs at C Concourse will serve as the central gathering space for the concourse. It will feature an open amphitheatre design surrounded by dining and retail options, a bar, and a stage for live music. The stairs will connect the upper level that hosts restaurants. A lookout deck encased in glass, offering unrestricted views of the airfield and Olympic Mountains, will be available for all passengers.
Freestanding kiosks will be located at the centre of the concourse. Six of the kiosks will host a rotating series of businesses to ensure that frequent passengers are offered new options each time they travel. It will be coupled with long-term retail and dining options to balance the temporary nascent businesses with permanent stores.
Sustainable features of the airport expansion
The C Concourse expansion project is the first project to follow the P
