A truck crash has closed the southbound slow lane of Interstate 5 just north of Valley of the Rogue State Park, the Oregon Department of Transportation reports.

Emergency crews are working to clear the way after a truck and trailer rolled into the median near milepost 46. Other cars were also caught up in the crash, which was first reported at 12:09 p.m., preliminary reports say.

Oregon State Police and ODOT crews are on the scene and warn of potential delays and congestion.