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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Elementary schools, high schools, colleges, universities, school districts, and general contractors working with educational institutions entrust INTERRA to provide responsive service, expert consulting advice, and reliable laboratory results to drive their projects forward as quickly as practically possible.  Because school construction projects often take place when students are present, INTERRA provides an even greater level of consideration for construction site safety and the project team’s effort to complete the project on time so that disruptions to the academic community are minimized.

INTERRA has provided consulting services and comprehensive testing services for soils, concrete, aggregate, asphalt, masonry, and structural steel for a large number of schools.  Please find below a representative list of some of these projects.