Structural Concepts, Inc. is a Tucson-based structural engineering firm established in January 1992 by Dan Lundwall, P.E. and George Stevenson Jr., P.E., who bring their clients over 70 years of engineering and construction experience. The company was founded on a commitment to the pursuit of excellence in structural engineering services. In 2015, Dan and George furthered that commitment with the addition of Jennifer McMahon, P.E. as a principal.

Each project that the firm undertakes is managed by one of the three principals. They are supported by a staff of highly qualified structural engineers, construction inspectors, and drafting technicians. Our diverse experience and CAD technology allow Structural Concepts to uniquely blend state-of-the art technical services of a large firm with the hands-on personalized service of a small company.