Quality, Service & Commitment

INTERRA NEWS

  • 08 May 2018

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

  • 28 Apr 2018

    INTERRA AWARDED IDOT PTB 187, ITEM 4 PROJECT

  • 08 Dec 2017

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

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Certified

Laboratory Certifications

  • IL & WI State DOTs
  • ASTM
  • AASHTO
  • USACE

 

Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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Testimonials

With this letter we provide our confidence in INTERRA in providing comprehensive field and laboratory testing for projects involving soils investigations, design and construction monitoring … Their services are consistently ontime and within budget…

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Certifications

INTERRA’s full service materials testing laboratories are among the finest and most respected in the Midwest.  Our proprietary data management system provides up-to-date information regarding testing status, performs thorough quality control procedures, and allows clients to access test reports online. The quality of work performed by INTERRA is further demonstrated by the certifications we possess from various regulatory agencies.  Please visit agency websites for scope of accreditation and accredited methods or prequalification categories for each of our laboratories.

  • American Association of State Highway & Transportation Officials (AASHTO)
  • Illinois Department of Transportation (IDOT)
  • Indiana Department of Transportation (INDOT)
  • Michigan Department of Transportation (MDOT)
  • Wisconsin Department of Transportation (WISDOT)

Interra is certified as Minority/Disadvantaged Business Enterprise (M/DBE) by the following Agencies:

  • Illinois DOT (IDOT)
  • Indiana DOT (INDOT)
  • Michigan DOT (MDOT)
  • Wisconsin DOT (WisDOT)
  • City of Chicago
  • State of Illinois
  • State of Wisconsin