This IDOT project consists of the reconstruction on I-80 from west of US 30 to 0.3 miles east of US 30, reconstruction of the I-80 at US 30 interchange, re-decking, and a partial bridge replacement at I-80 over US 30, Metra Railroad and Hickory Creek within the Village of New Lenox. INTERRA performs Quality Assurance services which include the inspection and testing of soil, asphalt, and concrete. For this project, testing and inspection of concrete was performed in the field. Concrete tests included slump, air content, strength, and temperature. Cylinder specimens were made, collected, and transported to the INTERRA laboratory. Witnessed, verified, and performed split sampling with contractor’s QC personnel. Daily inspection and testing of materials included compaction of backfill materials, troubleshooting any field issues and reporting the issues to the materials coordinator. Other services provided included the monitoring of proof rolls, soil compaction, and Dynamic Cone Penetrometer (DCP) testing. For asphalt, INTERRA verified the results of the density and temperature.
