Quality, Service & Commitment

INTERRA NEWS

  • 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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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

LPV111, New Orleans East Back Levee, Louisiana: “Management was attentive to our needs, provided the advice needed to make cost effective decisions, and followed through with action in the field.  This was a very high profile project with a one …

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Construction Inspection-Noise Wall, I-294, Cook County, IL

INTERRA Services

Developed Quality Control Program (QCP) Plan as per ISTHA requirements.

Quality Representative (QR) for the project to ensure compliance with the contract documents and the QCP.

Project Background

The work under this Contract consists of: design and construction of a wood  noise abatement wall extension at Plainfield Road over I-294 near Indian Head  Park, IL. The work is on the northbound side of I-294 along the northbound  entrance ramp to the Hinsdale Oasis. Approximately 80′ of existing wood noise  abatement wall will be removed. Approximately 525′ of new wood noise  abatement wall will be constructed. The work also includes the necessary traffic  control, temporary pavement markings, and temporary concrete barrier to  establish the work zone. The work under this Contract is to be performed on: the  Tri-State Tollway (I-294) Mile Post 24.4 to Mile Post 24.5, Station 1291+22 to  Station 1296+57 in Cook County Illinois.