Motorists have faced numerous issues on the roads this morning and problems with traffic signals are now causing further delays.
Police have reported problems with the traffic signals on the A19 at both the A690 junction in Sunderland and the A184 junction at Testos roundabout.
Both are currently causing significant delays.
A spokesperson for Northumbria Police said: "At 6.49am today police received a report that a lorry had broken down on the A19 northbound at Houghton.
"Officers attended the scene where one lane was blocked."
A collision on the A1 also led to delays. All lanes have now reopened on the A1 north near the Angel of the North after a car hit the central barrier earlier this morning.
One lane was blocked while emergency services dealt with the incident.
Traffic from the A1 was diverted towards the A19.