Collena Ahrens, P.E.
President
Collena graduated from Southern Illinois University Edwardsville with a B.S. in Civil Engineering in 2004 and from Lindenwood University with an M.B.A. in 2008.
Tim Ahrens Jr.
Vice President
Tim also graduated from Southern Illinois University Edwardsville with a B.S. in Civil Engineering in 2003.
Our Amazing Family, Clients, Subcontractors, and Support Network
The Backbone of Our Organization
We couldn’t do half of what we do here at Guttmann Ahrens Engineering & Construction if it wasn’t for our awesome family, clients, subcontractors, and support network. We have mentors, service providers and many other expert individuals who help us help our clients.