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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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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K.I. Sawyer Air Force Base – Landfill 4, Gwinn, Michigan

INTERRA Services

Provided Construction Quality Assurance (CQA) Services on the installation of  approximately 2,000,000 sq. ft. of flexible membrane liner, gas vent layer, drainage layer for the final cap of  Landfill 4 at K.I. Sawyer AFB.  The cap construction was performed per Michigan Department of Environmental Quality (MDEQ) regulations. The work involved attending pre-construction meeting,  inventory of FML and on-site borrow soil at the site, density testing for gas vent layer, observation and documentation of the placement of drainage layer, material delivery, unloading, on-site transport and storage. Also monitored and documented activities such as trial seaming, panel deployment, and joining and seaming, non-destructive and destructive seam testing and repair operations.  Provided sampling for destructive seam testing and performed conformance sampling, measurement of installed quantities and visual inspection by walkover. Provided preparation of panel layout drawing, daily reports for Flexible Membrane Liner (FML) and the soils placed.