Built in 1917 by renowned architect Frederick J. Osterling, the Union Trust Building is a stunning example of Flemish Gothic design. Over the years, Shannon has been trusted with a variety of interior build-outs for premier office tenants such as:

• Glenmede Wealth Advisors
• Sisterson & Co., LLP
• Clifton, Larson, Allen (CLA)
• First Commonwealth Bank Office.
• Marshall Dennehey

Shannon also performed a two floor custom restaurant build-out for Freshii, a healthy fast food chain as well as a first-class eat in/take out space for The Speckled Egg, complete with new kitchen.

Our work respects the building’s historic charm while delivering modern, efficient spaces tailored to each client’s needs.

👉 Learn more about UTB's history and architecture

Completed in 1971 — the same year Shannon Construction was founded — the US Steel Tower has been a cornerstone of our interior construction work for over 30 years. Over the decades, we’ve delivered projects that enhance the building’s functionality and tenant experience, including:

• Renovating the International Corporate Suite
• Adding a new conference area on the 61st floor
• Designing and installing a custom sliding metal wall inspired by US Steel products, crafted by Ken Schultz
• Re-stacking corporate offices and upgrading spaces like the Learning Center on the 16th floor

Today, our team continues this tradition with current projects such as:

• New spec suites on the 27th and 32nd floors
• A full interior build-out of the 50th floor for Meyer, Unkovic & Scott, with 72 offices and 26 workstations
• Accessibility upgrades to the 51st floor corridor
• Expanding Steelfit to include a state-of-the-art pickleball court — a unique tenant amenity
• Four new projects on the horizon with USS/Nippon

👉Read more about our work at the US Steel Tower