A construction crew struck a gas line causing traffic delays Friday morning near Cedar Creek Apartments.
The break took place near the intersection of 12th Street and Watts Lane.
Traffic is blocked from 12th Street to Seminary Road and from 12th Street from Koch's Lane.
Ameren crews are now on the scene.
There are no reports of injuries at this time.
As of 4:30 pm Saturday, Ameren Illinois said a majority of the customers who had their gas shut off Friday as a result of the leak have had their pilot lights relit and services restored.
Ameren asks any customer who still requires assistance in relighting their pilot light to contact customer service at (800) 755-5000.