A lorry has shed its load of hay at the Annan Road roundabout on the A75 bypass in Dumfries.
Police Scotland say it will be "some time" before the load can be recovered and motorists are asked to avoid the are if possible.
An articulated lorry was left hanging on a motorway bridge this morning.
The food lorry left the main carriageway of the M6 between junctions 41 and 42 and the back of its trailer was hanging over the road linking the A6 with the village of Calthwaite.
Two lanes of the motorway were closed while the vehicle was recovered.