Quality, Service & Commitment


  • 19 Sep 2018

    INTERRA Selected As Finalist To Receive The 2018 Illinois Sustainability Award

  • 08 May 2018

    IRTBA Announces INTERRA President To Serve On Green Council Board Of Directors

  • 28 Apr 2018


More News


Laboratory Certifications

  • IL & WI State DOTs
  • ASTM


Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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You have skilled people, a superior laboratory facility with all the equipment in excellent condition and an outstanding QC/QA program. Your certified tranined staff was knowledgeable, courteous and proactive…

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Because INTERRA is a different kind of engineering, inspection, and testing company.

The Client is Always First.  We are first and foremost driven by the needs of our highly valued clients.  Complete client satisfaction isn’t how we do our business, it IS our business and it is the starting point for every decision we make and for every action we take.

The Strength of our Technology and People — Together.  Our investment and effective use of technology, systems, and procedures drives the quality, speed, consistency, and reliability of our laboratory and field services while our experienced and credentialed professionals deliver common-sense, innovative solutions to achieve project objectives.  Together, our technology and our people are an unbeatable combination.

An Independent Lab.  Because INTERRA has no outside ownership interests, our laboratories deliver test results that can be relied upon – each and every time — with no conflicts of interest.

A Sense of Urgency.  All of INTERRA works with a sense of urgency to move your project forward as quickly as prudently possible.  It is a cliché, but it is true:  time is money and we know our clients want both minimized.

A Culture of Accountability.  Not all projects go as anticipated; unexpected problems do sometimes occur.  INTERRA has always, and will continue to always respond quickly to address the rare problem or issue for which we may have responsibility.  This is how trust is earned and long-term client relationships are sustained; and this is why we have so many long-term clients.

Open Communications.  Because clients rely on timely information to keep abreast of project progress and to make sound technical and business decisions during the entire project life-cycle, we don’t hesitate to deliver information, data, or solutions – no matter if it is good or bad news – we know our clients need to know and want to know, either way.