The City of Boise has awarded Hensel Phelps a contract worth up to $700 million. The company will manage and construct major improvements at Boise Airport. The construction manager/general contractor (CM/GC) agreement runs through 2029 and covers Concourse A and Terminal Improvement projects.
The project scope includes up to 10 new gates in Concourse A. It also adds a central utility plant for heating, cooling, and electrical systems. A new back-of-house baggage handling system is part of the plan. Two phases of terminal enhancements will improve passenger flow and increase capacity.
The contract uses a not-to-exceed framework. Boise City Council will approve guaranteed maximum price agreements as work progresses. Airport officials emphasized that the projects will not use local taxpayer dollars. They will issue task orders as funding becomes available.
The Concourse A and Terminal Improvements are part of the BOI Upgrade capital development program. The program began in 2019 to accommodate passenger growth in the Treasure Valley. Boise Airport handled nearly 5 million passengers in 2024, an 81% increase from 2014.