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Glen Carbon Today
By the People, for the People
Full Closure of Illinois 157 and 162 Intersection Begins on Thursday
The $17.6 million project will construct new bridges and a signalized intersection with bike and pedestrian accommodations.
Published on Feb. 25, 2026
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The Illinois Department of Transportation has announced a full closure of the intersection of Illinois 157 and Illinois 162 in Madison County starting on Thursday, February 26, 2026. The closure is necessary to construct two new bridges, a new signalized four-way intersection, and bike and pedestrian accommodations. The overall $17.6 million project is expected to be completed by July 31, 2027.
Why it matters
This major infrastructure project will improve traffic flow and safety at a busy intersection in the Glen Carbon area, but will also cause significant disruptions during the multi-year construction timeline. Motorists are encouraged to plan ahead and use alternate routes to avoid delays.
The details
During the closure, traffic will not be permitted on Illinois 157 and Illinois 162 at the intersection. Both eastbound and westbound Illinois 162 will be closed, and neither will have access to Illinois 157. A signed detour will be in place directing traffic around the closure.
- The full closure begins at 7 a.m. on Thursday, February 26, 2026.
- Illinois 157 and the eastern leg of Illinois 162 are expected to be completed by October 31, 2026.
- The overall $17.6 million project, including the western leg of Illinois 162, is expected to be completed by July 31, 2027.
The players
Illinois Department of Transportation
The state agency responsible for managing and improving Illinois' transportation infrastructure.
What’s next
Motorists should expect delays and are encouraged to use alternate routes during this closure. Drivers are urged to reduce speed, be alert for changing conditions, obey all construction signage and refrain from using mobile devices while approaching and traveling through the work zone.
The takeaway
This major infrastructure project in Glen Carbon will improve a busy intersection, but will also cause significant traffic disruptions over the next several years. Drivers should plan ahead and use alternate routes to avoid delays during the construction timeline.
