Newton Cap viaduct, The town also has a Grade II listed Victorian railway viaduct crossing the River Wear. At 105 feet (32 m) high, the viaduct provides views of the surrounding countryside below as well as Auckland Castle, the Bishop's Park and the Town Hall on approaching the town from the Viaduct. It was originally built in 1857 to carry the Bishop Auckland to Durham City railway line across the River Wear and the Newton Cap Bank that leads down to the river. The railway closed in 1968 and the viaduct fell into a period of disuse and was at one point threatened with demolition. However in 1995, the viaduct was converted for vehicle use to take traffic on the A689 between Bishop Auckland and Crook, relieving the Grade I listed fourteenth century single lane Bishop Skirlaw bridge which sits in the valley below it.