Intersection improvements begin March 17 at Illinois 161 and Illinois 158

BELLEVILLE – The Illinois Department of Transportation announced today that improvements at the intersection of Illinois 161 and Illinois 158 in St. Clair County will require daily lane closures beginning Tuesday, March 17, weather permitting.

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 project is expected to be completed by early summer 2026.

For IDOT District 8 updates, follow us on the social media platform X at @IDOTDistrict8 or view area construction details on IDOT’s traveler information map on GettingAroundIllinois.com.

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