Roman road from Chester-le-Street

It has been generally agreed since the 18th century that a Roman road connected Chester-le-Street with a bridge across the Tyne. Two stretches are thought to lie under existing roads:
a) Durham Road through Birtley
b) Old Durham Road - High Street - Bottle Bank through Gateshead.
Between these stretches, in open country, Wright located it in 3 places in 1938-9:
NZ 2714 5695, beside Coach and Horses PH, he found a raised causeway suggesting there had been a bridge over Leyburnhold Gill. No traces today.
NZ 2707 5835 (garden of 15 Chambers Cres.) he obtained a cross-section of the E half, 8 feet, of the road, the remainder being under the back lane.
NZ 2704 5876, the road was 17 feet 6 inches wide, and built in 3 layers of 6 inch and 8 inch grade sandstone blocks. He could see nothing "further north across the golf course and Mossheap quarries".