From the Alabama Department of Transportation:

An overturned tractor-trailer is blocking the outside lane of U.S. 31 southbound near Swan Creek in Limestone County, between Athens and Decatur. Currently, the wreck is not creating major traffic delays.

There will be some period during which both southbound lanes are closed for the wrecker to remove the tractor-trailer, so motorists are urged to avoid the area and use alternate routes, if possible. ALDOT anticipates the road to be cleared by noon.