Quality, Service & Commitment


  • 08 May 2018

    IRTBA Announces INTERRA President To Serve On Green Council Board Of Directors

  • 28 Apr 2018


  • 08 Dec 2017

    INTERRA Honored With 2017 IRTBA Green Industry Achievement Award For Green Initiatives

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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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Chicago O’Hare Airport, Terminal 6 Project: “We would like to extend our appreciation to you and all of your employees who worked on the Terminal 6 Project.  All work was performed professionally, accurately and thoroughly. Your commitment to quality and …

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Geotechnical.  From multi-story buildings to shopping complexes to highways and bridges, INTERRA has completed numerous engineering, geotechnical, and drilling projects throughout the United States.  Our staff of experienced professional and geotechnical engineers, complimented with our full service materials testing laboratory, provide the expertise and practical recommendations needed to successfully complete even the most demanding construction projects.

  • Subsurface soil explorations, soil classification and evaluation, geotechnical reports
  • In situ vane shear and pressure meter testing
  • Roadway / structure geotechnical reports
  • Slope stability and settlement analyses
  • Design of specialized foundation systems
  • Seismic analysis

Environmental.  INTERRA’s team of environmental engineers and scientists provide clients with a full range of pre-construction environmental services to delineate, understand and remediate identified environmental liabilities.  We also deliver a full-range of environmental services to quickly and economically resolve environmental issues that arise during construction to keep your project advancing as planned.

  • Phase I and II investigations; environmental site assessment / characterization
  • Pre-Demolition inspection / assessment of hazardous building materials
  • Management / disposal oversight of impacted soils and hazardous building materials
  • Solid and hazardous waste landfill design
  • Site health and safety plans, protocols
  • Groundwater and soil sampling
  • Regulatory compliance reviews

Results Delivered.  INTERRA effectively combines the experience and expertise of its diverse professional staff, a creative, innovative, and cost-effective approach to solving engineering, geotechnical and environmental problems, and strong project management and client communication skills to deliver the project results our clients expect.