The A19 southbound is closed - queueing traffic due to an overturned car between the A1046 Haverton Hill Road (Portrack Interchange) and the A1130 Levick Crescent.
The car was travelling on the northbound carriageway when it flipped over onto the southbound carriageway.
The road is expected to remain closed for several hours. Police have extended the closure back to the Portrack Interchange.
Diversion is via the A66.
More top news
A study by the University of Oxford forecasts an increase of more than half a million foreign-born people in England between 2011 and 2014.
Paul Brand is joined by four new Parliamentary candidates for a lively debate on the economy and immigration. Watch the programme here:
A look ahead at the forecast for the Border region.