It then has a very short dual carriageway section to aid overtaking, prior to meeting the A66 just outside the small town of Brough, where it terminates. From Newbiggin-on-Lune to Tebay the road follows the route of the former South Durham & Lancashire Union Railway.
The road's design features a short section intended for overtaking before joining the A66 near Brough, and then concluding its journey there. The route from Newbiggin-on-Lune to Tebay follows the path of the former South Durham & Lancashire Union Railway.