FAYETTE COUNTY — U.S. Highway 51 south of Vandalia remained impassable Monday afternoon due to flooding across the roadway from the Kaskaskia River.

According to the Fayette County Sheriff’s Office, the Illinois Department of Transportation has closed the roadway between Shobonier and Vandalia and that the agency has crews on scene.

Heavy rains over the weekend resulted in the river leaving its banks.

The sheriff’s office says traffic continues to be detoured on the St. Peter blacktop for traffic heading north.