Offices


Des MoinesGeolocation: 41.5767, -93.6226

In 1975 Terracon opened an office in Des Moines. From its roots in geotechnical engineering, the Des Moines office has developed into a successful multi-discipline firm specializing in geotechnical, environmental, and construction materials services. With a staff of over 50, an in-house certified laboratory and drill rig fleet, we are able to provide timely and professional services to our clients. With the goal of building strong client relationships and hiring many employees educated at Iowa Universities has allowed Terracon to thrive in the State of Iowa. To date, we have performed over 24,000 projects in Iowa, including a significant portion of renewable energy projects including wind towers and biofuel plants.

Key Projects


Clow Valve Company, Private LandfillGeolocation: 41.2939, -92.6444
Terracon provides services to Clow Valve Company to assist in adhering to their Consent Agreement with the United States Environmental Protection Agency (US EPA) to monitor groundwater in and around an abandoned coal mine strip that contains waste arc melt baghouse dust. The project involved developing plans to design, install, and monitor six groundwater monitoring wells in accordance with EPA recommended methods. Terracon also developed a closure-cost estimate for 30 years of compliance monitoring and reporting.

Southeast ConnectorGeolocation: 41.6005, -93.6091
Terracon's Des Moines office is a leading provider of geotechnical and construction materials testing services on transportation projects in the state of Iowa. An example project is the new 5-mile, multi-lane arterial that will connect downtown with US 65 at Pleasant Hill. The project includes a new 7-span dual bridge over the Des Moines River and several other bridges, relocating levees, and mitigating difficult soil conditions. Terracon's scope includes exploration, field and laboratory testing, engineering analyses (seepage, global stability, and settlement), and geotechnical design.…

Wells Fargo Home Mortgage CampusGeolocation: 41.5772, -93.7113
Terracon was selected to provide special inspection and construction materials testing services for Wells Fargo Home Mortgage's new campus on a 176-acre tract of land south of Jordan Creek Town Center. Four buildings were constructed providing approximately 960,000 square feet. Terracon's responsiveness was enhanced by utilizing our on-site work trailer which also served as a laboratory. This allowed us to eliminate transportation charges.