RDA is a small local company, located in downtown Ann Arbor, Michigan, with a stellar reputation and strong community ties. We have been in business since 1961 and are known for quality work, expertise, dependability, and ingenuity.

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Our Structures:
Fixed Yet Flexible

In complex projects, the devil is in the details. At RDA, our attention to detail is clearly visible.

Our Foundation:
Solid and Proven

With five decades of engineering experience, you can trust that your project is in capable hands.

Our Methodology:
Creative and Collaborative

Our multidisciplinary backgrounds help our clients creatively achieve that success.