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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Great Lakes Naval Base, Great Lakes, IL: “They reacted extremely well to ever changing schedule demands and testing needs on short notice.” Joseph Albrecht, QC Manager, Blinderman Construction Company

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INTERRA, Inc. Full-Time Field Technician Openings in Franklin, WI

INTERRA, Inc. is currently seeking full-time field technicians to perform Construction Materials Testing Services on WisDOT construction sites at our Franklin, WI office location. Responsibilities 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 detailed 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 (with a good driving record) and the ability frequently lift heavy objects weighing greater than 50 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 but we are willing to train qualified individuals. At least 1 year of field experience with the State or on Private jobs with concrete & 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 is required along with random and post-incidence drug screening specific to each project site.

INTERRA, Inc. is an EEO employer.

Please remit resumes to:

Julia Slota
5004 W Ashland Way
Franklin, Wisconsin 53132
414-235-3170, Ex 3001

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