From the Department of Public Safety:
State Police say a tractor trailer hauling peat moss overturned on the entrance to the Falmouth Spur of the Maine Turnpike early this afternoon closing that ramp.
Wreckers are now on scene to upright the vehicle.
The driver was slightly injured, but remains at the scene.
Southbound motorists wanting to get on the turnpike will need to travel to Portland or South Portland to access the turnpike until the wreck is removed.