Quality, Service & Commitment

INTERRA NEWS

  • 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

    INTERRA AWARDED IDOT PTB 187, ITEM 4 PROJECT

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

U.S. Route 34 at the Canadian National (CN) Railroad Bridge Construction: “Thanks very much for a job well done throughout this entire project. Congratulations to you and your staff!” David A. Cuthbertson, PE, Senior Project Manager, Alfred Benesch & Company

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Various Projects – City of Chicago

INTERRA Services Geotechnical Field Inspection and Testing

Concrete Plant and Field   Inspections

Hot-Mix-Asphalt (HMA) Plant and Field Inspection

Pavement Coring and testing

Laboratory testing of Asphalt Mixes

Laboratory testing of Concrete samples

Laboratory testing of Soil samples

Annual QC/QA review meetings are being conducted at our   facilities

Construction Inspection for ADA Ramps

 

Project Summary

Since 2003, INTERRA has been providing quality assurance testing and inspection of materials on various City of Chicago projects including Arterial, 50/50 sidewalk program, water Management projects. INTERRA’s services consisted of QA inspection at concrete and asphalt plants, soils and aggregate inspection and field inspections involving asphalt density testing and concrete testing.  Over 250 projects under the QC/QA construction Engineer Contract Spec. No. 21694 were covered. QA services were provided for various bridges over I-90/94 under the Expressway Viaduct Program. Provided testing and inspection services for ADA Ramps program.