Quality, Service & Commitment


  • 22 Jan 2018

    Civil Engineer Needed

  • 08 Dec 2017

    INTERRA Honored With 2017 IRTBA Green Industry Achievement Award For Green Initiatives

  • 26 Oct 2017

    INTERRA To Host Ribbon Cutting With Bolingbrook Mayor Celebrating Going Green

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Laboratory Certifications

  • IL & WI State DOTs
  • ASTM


Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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U.S. Route 34 at the Canadian National (CN) Railroad Bridge Construction: “Thanks very much for a job well done throughout this entire project. Congratulations to you and your staff!” David A. Cuthbertson, PE, Senior Project Manager, Alfred Benesch & Company

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INTERRA has provided  engineering, inspection, and testing services for municipal clients that demand quality work products and responsive service on a consistent basis.  Municipal clients maintain long-term relationships with INTERRA because they know they can count on us to get the job done…no matter what the job is.

As one example of many, a municipal client initially retained INTERRA to determine subsurface soil stratification for a new salt dome.  This project was then quickly followed by a subsurface investigation for a proposed roadway reconstruction project and another to perform asphalt coring and test analyses.  Ultimately, INTERRA was retained for another four geotechnical investigations in rapid succession.

Additional examples of INTERRA’s work with municipalities can be found below.