REVLAC System Rehabilitation

Location
Chicago, IL
Timeline
2025
Client
Illinois Department of Transportation
PROJECT OVERVIEW

About This Project

John Burns successfully completed the rehabilitation of the Reversible Lane Access Control System (REVLAC) on the Kennedy Expressway South Bound lanes. John Burns removed and replaced the existing outdated equipment that opens and closes the reversible lanes, upgraded the existing control and communication equipment, replaced the existing cameras, and installed additional cameras to monitor the reversible lanes. John Burns overcame significant challenges, including an unexpected major increase in cable removal and installation, complex equipment replacements in tight spaces, and long lead times for materials. Coordination with another contractor and constant communication across teams were key to managing the technically demanding electrical work and staying on schedule.

Markets

Highway & Roadway Infrastructure
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Illinois

Scope Of Work

  • Removed and replaced 117 existing swing gate cabinets and arms of various lengths.
  • Removed and replaced 6 existing vehicle restraining barriers.
  • Removal of 550,000 LF of existing power and control cable.
  • 950,000 LF of power, control, and fiber optic cable installed to feed the entire system.
  • Upgraded the existing PLC control and communication system that controls the opening and closing of the reversible lanes. 
  • 56 existing cameras have been upgraded to allow them to function with the new PLC system.
  • Installed 15 new camera poles to monitor various locations throughout the reversible lanes.
  • Programmed 200 PLC devices to control the entire system.
  • 12,500 terminations were needed to complete PLC wiring and connectivity.
  • Upgraded existing control equipment in 4 existing REVLAC roadside buildings as well as infrastructure upgrades to the IDOT Communications Center in Schaumburg.
  • Various site improvements at existing REVLAC buildings include new driveways, backup generators and electrical and mechanical equipment upgrades.

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