Quality, Service & Commitment


  • 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

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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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With this letter we provide our confidence in INTERRA in providing comprehensive field and laboratory testing for projects involving soils investigations, design and construction monitoring … Their services are consistently ontime and within budget…

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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.