Quality, Service & Commitment


  • 19 Sep 2018

    INTERRA Selected As Finalist To Receive The 2018 Illinois Sustainability Award

  • 08 May 2018

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

  • 28 Apr 2018


More News


Laboratory Certifications

  • IL & WI State DOTs
  • ASTM


Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

Read More


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 …

Read More

New Orleans East Back Levee (LPV111) – Army Corps of Engineers

INTERRA Services

  All materials testing from INTERRA accredited on-site laboratory

  Proctors, Atterberg Limits, Grain Size/Hydrometer, Percent Fines, Organic Content, Moisture Content (Oven/Microwave) completed on approximately 3,700 soil samples

  Compressive Strength tests completed on concrete cylinders

  Field Compaction Tests using Nuclear Density Gauge and Sand Cone tests

  Field concrete testing

  Pile driving inspections

  Concrete testing

  Soil testing

  Rebar pull tests

  Salinity and chemical analysis of water for Deep Soil Mixing Operations

Project Summary

Archer Western-Alberici Joint Venture was tasked by USACE to reconstruct, elevate, and reinforce more than five miles of levee outside of New Orleans. The project is a part of the federal government’s efforts to protect New Orleans from hurricanes.

The team also constructed more than 2,000 lineal feet of concrete flood wall. In addition, the team raised the elevation of the levee from an average of +14 to +26 feet using approximately 1.7 million cubic yards of clay embankment in an 18-month period.

Soil below the levee was strengthened through the use of deep soil mixing; a technology that uses large augers to drill holes in which cement is mixed with the soil to create a column of soil and cement that is left in place.