Lane two was closed southbound, after the B1320 Peterlee entry slip, due to a collision.
Highways England has confirmed all vehicles have now been recovered and the road has reopened.
There are more problems on the same carriageway further south.
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Lane one is closed between the A179 and A689 junctions near Hartlepool due to a broken down vehicle.
Recovery is en route but traffic is tailing back for several miles.