One lane of the A1 southboud is shut between Catterick Central and Leeming following a five-vehicle collision.
The emergency services are at the scene. Traffic is moving although drivers are facing delays of 30 minutes.
Highways England says it may be 1pm before the road is cleared.
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The A1 has now reopened southbound between Junction 51 and 50 following last night’s breakdown.
The #A1M is now open southbound in #NorthYorkshire, between J51 and J50, following recovery of a broken down abnormal load. This was an extremely complex operation, many thanks for your understanding and patience.
— Highways England (@HighwaysYORKS) February 1, 2018
The road was shut in both directions after a vehicle carrying an abnormal road broke down.
A 120-tonne crane had to be assembled at the scene to move the load to another vehicle.
The load was a 52-tonne bridge joint and required specialist recovery.
Recovery for the broken down abnormal load is now well under way on the #A1M which is closed both ways between J51-J50. Photos from scene show the 120 tonne crane which has been constructed to transport the load to a new vehicle. Road likely to remain closed throughout the night. pic.twitter.com/FKBvkDsf72
— Highways England (@HighwaysYORKS) February 1, 2018
