McComas/O’Donnell & Naccarato Structural Engineering Firm in Carmel
In 2019, O’Donnell & Naccarato established a structural engineering firm in Carmel, Indiana with the acquisition of McComas Engineering. Since 1991, McComas, now known as McComas / O’Donnell & Naccarato, has earned a reputation for managing complex projects across the Midwest and beyond. The office is led by Vice President Rod McComas, PE, SE and Regional Director Tom Miltner, PE.
McComas/O’Donnell & Naccarato Structural Engineering Firm in Carmel
Email: info@o-n.com
Projects by McComas/O’Donnell & Naccarato Structural Engineering Firm in Carmel
We at McComas/O’Donnell & Naccarato take pride in our work, providing our clients with innovative technology and a relationship-driven approach. Our Carmel office specializes in engineering for precast concrete, cold-formed-steel, and structural design to the aquatics industry for competition pools, dive towers, and leisure swimming pools throughout the country.
McComas/O’Donnell & Naccarato in the News

The Carmel, Indiana based structural engineering firm McComas Engineering has merged operations with O’Donnell & Naccarato.
The entire McComas staff, including office leaders Rod McComas, PE, SE and Tom Miltner, PE, will continue to serve regional clients as McComas/O’Donnell & Naccarato. The merger strengthened O’Donnell & Naccarato’s geographic position and services on a national level. The combined firms with more than 100 employees in 4 regional offices are registered to perform design and restoration services in 49 of the 50 states and Washington D.C.
You can read the full press release here.
Structural Engineering Firm in Carmel
O’Donnell & Naccarato is a structural engineering firm that specializes in facade restoration, parking garage restoration, and structural design. Our Carmel, IN office offers innovative alternatives and efficient designs that keep costs in line and allow for ease of construction. We strive to provide the most in-depth analysis so that each building will support the design and system elements critical to its unique architectural expression and purpose.