It was reported that one vehicle had struck the barrier and then another car collided with it.
Officers say they don’t believe anyone involved has sustained any serious injuries but the North East Ambulance Service have confirmed that one patient was treated at the scene and another was taken to Sunderland Royal Hospital for further treatment.
Sunderland at Wembley: Fans raise 'virtual tip jar' fundraising target to thank staff at Covent Garden pub after smashing original total
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
Lanes 2 and 3 on the A19 have since reopened following the incident.
Tyne and Wear Fire and Rescue Service also attended the scene this morning with three appliances from Washington, Marley Park and Sunderland Central Community Fire Stations.
A Fire Service spokesperson said: “Our Fire Control team received a call at 08.46am by a concerned motorist. During the incident we worked alongside our blue light colleagues at the North East Ambulance Service and Northumbria Police. Our crews made the vehicles safe and left the scene at 09.16am.”
An update from the National Highways North East feed on Twitter said: “All lanes are now open on the #A19 southbound between #A1231 and #A183 near #Washington following an earlier multi vehicle collision. Delays are clearing well in the area. Have a safe onward journey.”