Project Detail

Thames River Bridge Rehabilitation (Electrical)

New London, CT

Scope of Work

Cianbro was responsible for the electrical rehabilitation of the Thames River Bridge including all power controls, communication, and electric traction.

Project Details

  • Upgraded the electrical system by installing a new 600 amp, 3 phase, 480-volt electric service which feeds two Motor Control Centers
  • Installed an emergency back-up system consisting of a 350 kW diesel generator, 600 amp, and 480-volt auto transfer switch
  • Installed 480-volt transformers, panel boards, and associated equipment
  • Installed over 700 feet of cable tray
  • Installed over 10,000 feet of electrical conduit
  • Installed over 180,000 feet of electrical wire
  • Terminated over 3,000 electrical connections
  • Installed a new lighting system including walkway lights, sheave hood lights, lifting girder lights, channel navigation lights, aviation beacon lights and lift span lighting
  • Work performed during the 4-day rail outage included:
    • Installing span locks, limit switches, and plunger switches
    • Installing 140 feet of 30 multi-conductor flexible cable chase cables and associated supports in 200-foot tall towers
    • Installing medium voltage (25 kV) rail overhead electrification
    • Integrating the Amtrak Signal System
    • Completing over 600 wire terminations

The Construction Manager was URS Corporation (Previously The Washington Group, Inc.).


Bentley Systems Innovations in Infrastructure Award
AGC Build America Award
Independent Electrical Contractors Association Excellence in Electrical Construction Award
ABC Connecticut Excellence in Construction Best in Show Award