KTA I-70 ExpansionGeolocation: 39.0558, -95.689

I-70 from East Topeka to Lawrence experiences high traffic volumes during the peak hours, as well as during the academic year with the University of Kansas. The Kansas Turnpike Authority hired HNTB Corporation to design a solution to alleviate the congestion and expand the toll plazas. Concurrently, aging bridges over the Kansas River needed to be replaced. HNTB initially retained Terracon to provide contract drilling and geotechnical laboratory services for the expansion project. In addition, the Hamm Companies also retained Terracon to provide construction observation and testing for the project.

Topeka, KS


Associated Office

TopekaGeolocation: 39.0119, -95.6843
In 1986, Terracon acquired Barnett, Stuart & Associates, Inc, a local consulting geologist firm which provided geotechnical and geological services across Kansas for more than 20 years. The office was immediately staffed and equipped to perform extended geotechnical engineering and construction materials engineering and testing services throughout Kansas. While many of the services, which the office provides, remain the same today as they were in 1965, engineering and testing has become faster and more sophisticated. The Topeka office provides a full range of geotechnical, environmental,…