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McComas/O’Donnell & Naccarato – Indianapolis Office

In 2022, O’Donnell & Naccarato established a structural engineering firm in Indianapolis, Indiana. In 2019, O’Donnell & Naccarato acquired the Indiana-based engineering firm 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.

Three Parkwood Crossing, 450 East 96th Street, Suite 175
Indianapolis, IN 46240
Phone: 1-800-607-7284

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Our Structural Engineering Projects in Indianapolis

We at McComas/O’Donnell & Naccarato take pride in our work, providing our clients with innovative technology and a relationship-driven approach. Our Indianapolis 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.

Johnson Memorial Hospital
Franklin, IN

Johnson Memorial Hospital, to address growing population needs over the next decade, constructed a new, state-of-the-art emergency/outpatient services facility and new, comprehensive rehabilitation center on the hospital’s campus. The two-story ED/Outpatient expansion to the hospital includes a 17,400 square-foot emergency department with a new ambulance drive and bay. The 33,000 square-foot outpatient services space offers radiology, laboratory and wellness activities, wellness suite and room for future expansion and services on the second floor. A large, separate canopy-covered entrance provides smooth, safe patient access. You can read more about our work with Johnson Memorial Hospital here.

Photo of main entrance for Johnson Memorial Hospital | structural engineering firm Carmel | O'Donnell & Naccarato

Gateway Hancock Health Immediate Care Center
Greenfield, IN

Providing services in an area with few options, Gateway Hancock Health’s new free-standing immediate care center satisfies the needs of the community and its staff within a uniquely efficient and aesthetically bold facility. Patients now have access to labs and imaging, as well as blood tests, X-rays, ultrasounds, and many other services or tests needed.

O’Donnell & Naccarato utilized composite steel framing within the structural design of the medical office building. Decorative, built-up steel columns support the entry canopy and drop off, while special attention was given to ensure the stability of the large wing wall. Additionally, O&N completed the specialized design to support X-Ray and CT-Scan areas, including the support of the lead shielding. You can read more about our work with Gateway Hancock Health Immediate Care Center here.

Side view of Gateway Hancock Health Immediate Care Center | structural engineering firm Carmel | O'Donnell & Naccarato

Humane Society for Hamilton County
Fishers, IN

McComas O’Donnell & Naccarato provided structural engineering for an expansive, world-class animal wellness center for the Humane Society for Hamilton County in the city of Fishers, IN. The new center is pushing boundaries, designed to offer better quality of life for the animals in its care, as well as space to launch new programs that will connect people with the healing power of pets. The 40,000 SF facility includes 140+ dog kennels and 100+ cat enclosures, as well plenty of room for walking trails on its 10 acre wooded site. Structural design elements include steel frame and masonry bearing walls with a large canopy at the lobby with sloping columns. You can read more about our work with the Humane Society for Hamilton County here.

Backside of Humane Society for Hamilton County building | structural engineering firm Carmel | O'Donnell & Naccarato

McComas/O’Donnell & Naccarato in the News

McComas/O'Donnell & Naccarato logo | structural engineering firm Carmel | O'Donnell & Naccarato

The Indianapolis, 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.

Our Specialties & Mission

O’Donnell & Naccarato is a structural engineering firm that specializes in facade restoration, parking garage restoration, and structural design. Our Indianapolis, 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.