Cass Avenue over I-55 bridge repairs begin March 30

CHICAGO – The Illinois Department of Transportation announced today that repairs to the bridge carrying Cass Avenue over Interstate 55, in Darien, will begin, weather permitting, Monday, March 30. ​

To complete the work, Cass Avenue will be reduced from two lanes to one in both directions with various lane shifts approaching the bridge. The ramps to and from Cass Avenue will remain open during construction and the public can expect occasional overnight lane closures on I-55 at Cass Avenue. ​

The $1.8 million project, which consists of joint replacement, pier repairs and installing a new deck overlay, is anticipated to be completed in late August.

The public can expect delays and should allow extra time for trips through this area. Alternate routes are encouraged. Drivers are urged to pay close attention to flaggers and signs in the work zones, obey the posted speed limits and be on the alert for workers and equipment.

Over the next six years, IDOT is planning to improve 7,107 lane miles of highway and 8.4 million square feet of bridge deck as part of Rebuild Illinois, which is investing $33.2 billion into all modes of transportation. Accomplishments through Year Six of Rebuild Illinois include almost $20.8 billion of improvements statewide to 21,309 lane miles of highway, 815 bridges and 1,181 additional safety improvements.

For more information on IDOT projects, click here. Find traffic and road conditions at www.gettingaroundillinois.com. You also can follow IDOT on Facebook and X.

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