HR Green Wins Multiple Awards for Illinois Route 23 Interchange on I-90

April 09, 2021

HR Green, the Illinois Tollway, and Stantec won the Honor Award and the Judges Choice Award in ACEC Illinois’ 2021 Engineering Excellence Award Competition for the Illinois Route 23 Interchange on I-90 project. The project also won a National Recognition Award in the ACEC National competition.

In December 2019, the Illinois Tollway delivered a long-awaited interchange in McHenry County at Illinois Route 23 on the Jane Addams Memorial Tollway (I-90) featuring roundabouts and all-electronic tolling at the I-90 exit and entrance ramps to improve safety and mobility.

I-90 is the only interstate that cuts through McHenry County and the new interchange at Route 23 is the county’s first. The interchange gives the City of Marengo, a rural community 60 miles west of Chicago, and surrounding communities direct access to I-90.

McHenry County interchange earthwork

Illinois Route 23 and I-90 Interchange feature McHenry County’s first roundabouts and long-awaited access to I-90.

The project is the result of years of planning, study, and cooperation through a partnership among the Illinois Tollway, the Illinois Department of Transportation, the McHenry County Division of Transportation, and Marengo.

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