Terracon has been providing engineering consulting services in Minnesota since 1988 when it opened its first office in White Bear Lake. We added a second office in Plymouth with the acquisition of Liesch Associates in 2011, and are now offer a full range of Terracon services. We provide environmental facilities geotechnical, materials, and services to a wide range of clients in the commercial, industrial, and state and local government markets. We employ more than 75  professionals including engineers, geologists, scientists, engineering technicians, and administrative support staff.

We have a fully equipped, American Association of State Highway and Transportation Officials (AASHTO) and United States Army Corps of Engineers (USACE) certified laboratory.



13400 15th Ave. North Plymouth, MN 55441
Phone: (763) 489 3100
Fax: (763) 489 3101