Founded in 1994 as Structures Unlimited Inc., Michael T. Mahaney, PE opened a small office in the basement of his home to prepare structural steel connection design calculations for local steel fabricators.
As the demand for Mike’s services grew, Mike began to take on other structural engineering assignments outside the connection design field.
With business steadily increasing, Mike moved the company in 2001 to its current location at 8615 Gravois in south St. Louis County and hired additional staff to assist with the ever increasing workload.
It was at this time when the firm was reorganized and took on its current name of Structures, Inc.
Over the years, Structures, Inc. has strategically hired key personnel to allow the firm to diversify in the structural engineering field.
Structures, Inc. has expanded its services into both the building design and bridge design fields.
We are one of the few local firms of our size that truly has expertise in building and bridge design. And today we are still providing those same steel connection design services to the fabricator clients Mike started with over 20 years ago!
Our current ownership team, since 2011, John J. Gruendler, PE, SE, President, and Roy E. Jennings, PE, Vice-President, were each part of the key personnel that were hired to spark versatility in the firm. Each brings solid experience in their respective fields.
With John’s background in bridge design and Roy’s background in building design, the firm is positioned well in both areas, strengthening the firm’s sustainability and the ownership’s vision for continued growth.