Quality, Service & Commitment


  • 26 Oct 2017

    INTERRA To Host Ribbon Cutting With Bolingbrook Mayor Celebrating Going Green

  • 21 Jul 2017

    Recipient Of Service Award Thanks INTERRA for Engineering Support With Jane Byrne Circle Interchange

  • 15 Mar 2017

    INTERRA, Inc. Full-Time Field Technician Openings in Franklin, WI

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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 completed a large number of subsurface explorations for a wide variety of project types including; roadways, residential and commercial buildings, Army Corps of Engineer flood control projects, and Naval training facilities.  Exploration services have been conducted for new construction, expansion of existing facilities, and failure investigations.  A key component of INTERRA’s geotechnical expertise is derived from its staff, including two Ph.Ds and several engineers with Masters in Civil/Geotechnical engineering.

INTERRA’s state-of-the-art, 13,000 square foot office and laboratory performs advanced analysis procedures including; triaxial, consolidation, direct shear, and flexwall hydraulic conductivity testing.  INTERRA’s laboratories are accredited by the Army Corps of Engineers, AASHTO and IDOT.   The following is a partial list of geotechnical projects that INTERRA has completed.

  • Sheridan Road Improvements; Evanston, Illinois
  • McCormick Boulevard Reconstruction Project; Evanston, Illinois
  • IL Route 31 Improvements, Illinois Department of Transportation
  • Various Streets; Chicago, Illinois
  • 127th Street Realignment Project; Bolingbrook, Illinois
  • Various Streets; Naperville, Illinois
  • Various Streets; Hammond, Indiana
  • Great Lakes Naval Training Center; Great Lakes, Illinois
  • Naval Training Center, Highwood and Highland Park; Illinois
  • Cedar Crossings Retail Development; New Lenox, Illinois
  • Linden House of Hobart; US Army Corps of Engineers; Hobart, Indiana
  • Walgreen’s, SWC 95th Street & Martin Luther King Drive; Chicago, Illinois
  • Pine Ridge Apartments; Oswego, Illinois