CHICAGO | W.E. O’Neil Builds Largest Structural Steel Project in Chicago

06 November 2017

American Airlines’ new hangar at O’Hare International Airport is the largest structural steel project currently being erected in Chicago.

At 525 feet long, the building’s clear spans are nearly the length of an entire city block and are supported by steel piles driven 100 feet into the ground.

With 7,000+ tons of steel, this complex erection process is taking a total of 24 weeks. When complete, the hangar will stand eleven stories tall and house six 737 airplanes.

W.E. O’Neil is on track to exceed the City’s diversity goals, with 27% participation from minority-owned businesses and 8% participation from woman-owned businesses. Completion of the entire project is scheduled for summer 2018.

General Contractor: W.E. O’Neil Construction

Owner’s Representative: R.M. Chin & Associates

Architect: Ghafari Associates

Structural Engineer: Thornton Tomasetti