The Illinois Department of Transportation announced lane restrictions will be encountered on I-255 northbound over Prairie DuPont Creek south of Route 157 in St. Clair County beginning Friday, July 7. 

The outside right lane on I-255 northbound will be closed to traffic with the two left lanes remaining open. 

All lanes are expected to be open by 3 p.m. Tuesday, July 11.      

These restrictions are needed to perform emergency deck patching on the structure carrying I-255 over Prairie DuPont Creek, IDOT said. 

IDOT District 8 Operations forces will make the needed improvements. 

Motorists can expect delays and should allow extra time for trips through this area, IDOT said.