The O’Hare Modernization Program (OMP) reconfigured O’Hare International Airport’s intersecting runways into a more modern, parallel layout. The $6.6 billion Program will substantially reduce delays in all weather conditions and increase capacity at the airfield, allowing O’Hare to meet the region’s aviation needs well into the future.  The OMP also brought a new western terminal facility with more airline gates and parking. The western terminal is connected to O’Hare’s main terminal core by an automated people mover system.

INTERRA conducts monitoring and documentation of construction materials activities and performed concrete batch plant inspection and testing, compressive strength of concrete cylinders, calculated yields and unit weights, and executed field testing such as slump, air content, and testing. INTERRA maintains control charts and reports test results and performs field compaction tests using Nuclear Density Gauge for backfill on runways and utilities.

INTERRA responsibilities includes:

  • Field Supervisor to manage Technicians
  • Monitoring and Documentation of Construction Materials activities
  • Quality Assurance Services for Soils, Concrete, Asphalt, and Structural Steel

The following services are being provided:

  • INTERRA provides a Senior Field Supervisor to manage about 10 – 15 field technicians.
  • Field Technicians provide inspection services during the construction of new runways and relocation of existing runways. INTERRA has 4-8 full-time technicians on this project.
  • Subgrade soils are checked for suitability and appropriate recommendations are made for undercuts and lime stabilization. Perform compaction tests on the backfill for the runways and utilities.
  • Concrete batch plant inspection and testing consists of aggregate gradation testing, moisture testing, unit weights, and yield calculations.
  • Concrete field inspection and testing consists of air content, slump, and temperature tests per sub-lot at each of the randomly preselected locations. Test specimens consisting of Beams and Cylinders are cast as per the project specifications.
  • Testing concrete cylinders for compressive strength and concrete beams for flexural strength is being done in a field AASHTO approved laboratory.
  • Maintains control charts of the air content, slump, and temperature
  • Test results reported on a daily/weekly basis
  • HMA/WMA Plant and Field inspection, density testing HMA during placement splits and independent checks, verifying QC testing, conducting comparisons, verifying rollers, rolling patterns, and paver speeds.
  • QC laboratory inspection at Allied Asphalt Plant to ensure laboratory met FAA requirements.