National Highways confirmed shortly after 4pm on Monday, April 18 that there were four miles of congestion, as well as 30-minute delays for vehicles, after a caravan became detached from the car that was towing it.
All lanes within the affected area of the southbound carriageway reopened at around this time.
The incident impacted traffic between the A167, near Birtley, and the turn-off for the A1(M)/A194.
Sunderland AFC fans launch fundraiser as ‘thank you’ to staff at Covent Garden pub after Wembley play-off final win
Sunderland at Wembley: London pub landlord thanks SAFC fans for ‘bumper weekend’ after League play-off final victory over Wycombe Wanderers
19 Sunderland locations hosting Queen's Platinum Jubilee street parties
Sunderland to get its first roller rink in Keel Square with live DJ - here's when it opens
Woman caught drink-driving in Sunderland Aldi car park