Quality, Service & Commitment


  • 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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Laboratory Certifications

  • IL & WI State DOTs
  • ASTM


Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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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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Growth.  Opportunity.  Teamwork.  Integrity.  Support.

If all of these attributes in a company are important to you – along with excellent compensation packages that include competitive wages, family healthcare benefits, training, and matching retirement contributions, to name a few – then we encourage you to consider INTERRA for your next or first career move.

INTERRA is a rapidly growing, multi-faceted company that provides challenging and growth oriented opportunities to experienced, client-focused engineering professionals and new graduates.  Because of ongoing demand from our highly valued clients, INTERRA continues to increase the scope of its expertise and the scope of the technical services it delivers in the fields of civil engineering design, materials inspection and testing, geotechnical studies, and environmental assessment and remediation.

From each of our office locations in Illinois and Wisconsin we are always on the lookout for talented, committed, client-focused Project Managers, Project Engineers, Staff Engineers, and Field and Laboratory Engineering Technicians.  If we see that you are above the rest, we might even create an opportunity for you where none currently exists.


INTERRA believes in constructively engaging in community involvement and development efforts where it operates and encourages and supports its employees to actively participate.   INTERRA management and personnel strongly believe that “giving-back” to our local communities is both a privilege and a responsibility.


As an Equal Opportunity Employer (EOE), INTERRA has a highly diversified workforce and is the proud recipient of the Illinois Road and Transportation Builders Association’s “DIVERSITY AWARD.”


Engineering Technicians (Franklin, WI)

INTERRA, INC. is currently seeking full-time field technicians to perform Construction Materials Testing Services on WisDOT construction sites. Testing will consist of one or more of the following:

  • Field observation and testing during concrete placements
  • Sampling, inspection and testing of soils and aggregates
  • Laboratory testing of concrete cylinders, aggregates and soils

Qualified candidates must be detail orientated and able to work independently as well as in a team environment. This position requires basic computer aptitude and effective written and oral communication skills. Candidates must also have a high school diploma or equivalent; possess a valid driver’s license and the ability to frequently lift heavy objects weighing greater than fifty pounds on a daily basis. Some weekend and overtime work may be required.

The ideal candidate would have one or more of the following HTCP (WisDOT) certifications: PCCTEC-I, AGGTEC-I, CST, Grading Tech and/or NucDensity. At least one year of field experience on DOT or Private jobs with concrete and soils material testing is desired. A personal vehicle/truck that can carry a wheelbarrow and equipment onto a construction site is a plus. Pre-employment drug screening and background check are required along with random and post-incidence drug screening specific to each project site.

To apply or find out more about our current opportunities, please fill in the form below.