Syska Hennessy Named Engineering Consultant for the O’Hare Global Terminal

Syska Hennessy Group will serve as an engineering consultant for the new O’Hare Global Terminal, announces Gary Brennen, co-president of Syska.  The firm’s role includes mechanical, electrical, and plumbing (MEP), fire protection, vertical transportation, and high-performance energy modeling.

The O’Hare Global Terminal is the centerpiece of ORD21, which is a $8.5 billion multi-dimensional, multi-phased umbrella project for the long-term vision of O’Hare. Other ORD21 projects include the Global Terminal satellite concourses, the Terminal 5 expansion, and the terminal 2 hotel renovation, among others.

Syska will work closely with the lead architectural and engineering team composed of Studio Gang, Solomon Cordwell Buenz (SCB), Corgan, Millhouse Engineering and Construction, Inc., and STLarchitects.

Mr. Brennen, who is leading Syska’s team on the project, notes that Syska’s consulting services underpin many key objectives of the design, including an integrated holistic approach to sustainability.  For example, the design focuses on passengers’ health and well-being, as well as enhancing their experiences as they journey through the terminals.

“Aviation has always been one of our strongest practice areas, but it has really taken off, so to speak, over the past few years,” says Mr. Brennen. “Consequently, we were able to put together a large team of our own aviation experts for the O’Hare project during the successful pursuit.”

In recent years, Syska has completed high-profile aviation projects at San Diego International Airport, JFK International Airport, Los Angeles International Airport, Louis Armstrong New Orleans International Airport, and Orlando International Airport, among others.

Groundbreaking for the O’Hare project is expected to take place in 2023. “We have a lot of hard work ahead of us,” says Mr. Brennen.  “But we are excited to proceed.”

For more information about the project, please visit