Hensel Phelps Secures $2.5 Billion Project for Seattle-Tacoma Airport Concourse Development
Hensel Phelps is moving forward with a $2.5 billion project to develop the S Concourse at the Seattle-Tacoma International Airport.
Seattle Tacoma, WA, August 13, 2026 —
Hensel Phelps has been selected to lead a significant development project at the Seattle-Tacoma International Airport (Sea-Tac), involving the expansion of the S Concourse. The project carries an estimated value of $2.5 billion.
The scope of the development includes the construction and enhancement of the S Concourse, a key area for passenger operations at the bustling airport. Further details regarding the specific phases of construction, timelines, and the exact nature of the enhancements were not provided in the summary.
Sea-Tac Airport is a major hub for air travel in the Pacific Northwest, and this substantial investment by Hensel Phelps indicates a commitment to modernizing and expanding its facilities to accommodate growing passenger numbers and evolving aviation needs. The project is expected to represent a significant undertaking in airport infrastructure development.
Details concerning the bidding process, the specific components of the S Concourse development, and the expected completion date were not disclosed. The contractor’s name, Hensel Phelps, was explicitly stated as the entity moving forward with the project.
The $2.5 billion figure represents the total estimated value of the contract for the development. No additional financial details, such as funding sources or potential economic impacts, were included in the provided summary.
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