ISTHA Open Road Tolling Plazas 1, 17, 19, 37, 41 and 51

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Owner: Illinois State Toll Highway Authority
Location: Cook, DuPage and Winnebago Counties, Illinois

IEI worked on a team to prepare the master plan for the installation of the I-PASS express lanes at the following six toll plazas:

  • Plaza 1 - Beloit
  • Plaza 17 - Devon Avenue
  • Plaza 19 - River Road
  • Plaza 37 - I-55 Ramps
  • Plaza 41 - 163rd Street
  • Plaza 51 - York Road

IEI provided structural design engineering, report preparation, scheduling and cost estimating.