Quality, Service & Commitment

INTERRA NEWS

  • 26 Oct 2017

    INTERRA To Host Ribbon Cutting With Bolingbrook Mayor Celebrating Going Green

  • 21 Jul 2017

    Recipient Of Service Award Thanks INTERRA for Engineering Support With Jane Byrne Circle Interchange

  • 15 Mar 2017

    INTERRA, Inc. Full-Time Field Technician Openings in Franklin, WI

More News

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

Great Lakes Naval Base, Great Lakes, IL: “They reacted extremely well to ever changing schedule demands and testing needs on short notice.” Joseph Albrecht, QC Manager, Blinderman Construction Company

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Underground Electrical Duct Bank Repair; Detroit Water & Sewerage Dept

INTERRA Services

  Provide sub-contractors with Quality Control (QC) Plan for concrete

  Oversee earthwork operations including excavation, grading, and backfilling

  Perform compaction testing and proof-rolling

  Laboratory testing including modified proctor tests, grain size analysis and organic content

  Concrete testing for electrical duct banks, pier foundations, and pavement

  Concrete core testing; pavement thickness

 

Project Summary

As an integral member of the project team, INTERRA’s technical services and provided expertise for this highly demanding and challenging project – scheduled for completion in August 2014 – has been highly varied.

The geotechnical scope of the project consisted of installing concrete pier foundations for each of the many needed trestles.  The civil portion consisted of eliminating water leakage through the EB-1 basement walls from the sump pump and duct banks entering into the basement area.  Additional civil engineering work included waterproofing the EB-1 basement walls and minor site grading.  Finally, the project’s structural scope of work consisted of installing above ground trestles to support overhead electrical conduits and cables, the installation of a new foundation for new switchgear, and a foundation for a new transformer.  Other structural work included repairing concrete spalling cracks within one of the basements.