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


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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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Tamiami Trail Project-Florida: “Mr. Vyas and the whole Interra team were instrumental in contributing to the high quality work provided to the USACE.  Interra’s management went above and beyond in meeting our needs.” Larry Corn, Area Quality Manager,  Kiewit Infrastructure …

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About Us

INTERRA at a Glance:
  • Multiple Offices. INTERRA has offices / testing laboratories in Illinois and Wisconsin
  • Meets the Challenge. INTERRA has completed large and demanding projects throughout the United States as the prime consultant and as a sub-consultant
  • Agency Prequalified. INTERRA is prequalified by the Illinois Department of Transportation in the following categories:
    • Special Services – Construction Inspection
    • Geotechnical Services – General Geotechnical Services
    • Geotechnical Services – Structure Geotechnical Reports
    • Geotechnical Services – Subsurface Explorations
    • Special Services – Quality Assurance PCC & Aggregate
    • Special Services – Quality Assurance HMA & Aggregate
    • Airports – Construction Inspection
  • Accreditations. INTERRA’s material testing laboratories are accredited by state DOTs, Army Corps of Engineers, and AASHTO to provide common and advanced testing for soils, concrete, hot-mix asphalt, and aggregates
  • Quality + Client Satisfaction. INTERRA invests in and is fully committed to the use of systems, procedures, and employee training and certifications to sustain high quality standards in everything we do for complete client satisfaction
  • Safety + Client Satisfaction. INTERRA is a safety-driven organization and has achieved a superior record completing projects without incident for complete client satisfaction
  • IT + Client Satisfaction. INTERRA employs a technology-based information management ‘backbone’ to:
    • process and organize high volumes of sample/technical data
    • maintain consistent, accurate, and reliable documentation
    • deliver material test results in near “real-time” to expedite project progress and decision-making for complete client satisfaction
  • Sound Management. INTERRA has a strong management team and stable ownership to drive organizational consistency, superior client service, reliability, and accountability
  • Business Designations. INTERRA is certified as a Disadvantaged/Minority Business Enterprise with various state DOTs and local agencies