Darien, IL – Drivers traveling through DuPage County should prepare for delays as a major bridge repair project over Interstate 55 is set to begin Monday in Darien.
According to the Illinois Department of Transportation, work on the Cass Avenue bridge over I-55 will start Monday, bringing lane closures and traffic shifts along Cass Avenue and the bridge. While entrance and exit ramps to and from I-55 will remain open during construction, officials warn that motorists may encounter occasional overnight lane closures on the interstate beneath the bridge.
The $1.8 million project includes structural improvements such as joint replacements, pier repairs, and the installation of a new deck overlay designed to extend the life of the bridge and improve driving conditions. Crews are expected to remain active in the area through late August.
Transportation officials are urging drivers to plan ahead, reduce speeds in work zones, and allow extra travel time, especially during peak commuting hours. Increased congestion is likely as lanes are reduced and traffic patterns shift around Cass Avenue.
The project is part of ongoing infrastructure improvements in Illinois aimed at maintaining roadway safety and reliability. While the work may cause short-term inconvenience, officials emphasize the long-term benefits of smoother travel and enhanced bridge stability.
Motorists are encouraged to stay updated on construction progress and traffic conditions through IDOT alerts and local traffic reports.
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