One lane of the A19 southbound is currently blocked at the Peterlee turn-off after two light-goods vehicles collided.
Durham Constabulary were called at just before 11am.
One lane is still open at the scene, just after the Peterlee slip-road on A19 southbound. However the other lane has been closed in order to clear a large amount of debris from the road.
Nobody is thought to be injured.