Hall County sheriff's deputies are directing traffic to an open lane in front of the restaurant. Some motorists, meanwhile, are taking detours on side streets.
The wreck involves a tractor-trailer truck and a pickup truck.
Maj. Jeff Strickland, spokesman for the sheriff's office, didn't have any details about the wreck but said that injuries were minor.
Georgia State Patrol is handling the wreck. Other details weren't immediately known.