St. Clair County, Illinois – Lane closures on Interstate 64 began Monday, reducing traffic capacity on a key Metro East corridor and prompting long-term travel impacts.
According to the Illinois Department of Transportation, both eastbound and westbound I-64 are now affected between Illinois Route 157 and Illinois Route 50. Traffic in each direction will be reduced to two lanes, with additional nighttime lane closures scheduled as work progresses.
IDOT said the closures are necessary to allow crews to complete pavement repairs and bridge work along the corridor. The construction zone spans a heavily traveled stretch of I-64 used daily by commuters traveling between communities such as Belleville, Shiloh, and surrounding Metro East suburbs.
Transportation officials warn that motorists should expect delays, particularly during peak travel hours and overnight periods when lane restrictions may increase. Drivers are encouraged to slow down, remain alert for changing traffic patterns, and follow posted construction signage.
The project is expected to remain in place through summer 2026, making it one of the longer-term construction impacts currently affecting St. Clair County roadways. IDOT noted that timelines may shift depending on weather conditions and construction progress.
This section of I-64 serves as a primary route for workers, students, and freight traffic moving across the region, and officials advise allowing extra travel time or considering alternate routes when possible.
Additional project details, including traffic updates and future phase changes, are available through IDOT’s official channels.
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