A4081

Junction of the A4081 and B4358

The A4081 runs into the Radnorshire town of Llandrindod Wells from the west.

The road starts by climbing out of the Wye valley from a junction with the A470 below Dôl-y-fan Hill some 3 km north of Newbridge on Wye. Heading east, it skirts the hill before turning sharply left on meeting the B4358. Shortly afterwards it bypasses Llanyre but originally went through the village.

After crossing the Ithon at Llanyre Bridge, the route divides into two approaches to Llandrindod Wells, the administrative centre of Powys. The southern route is today considered to be the 'main line', although it was originally separately numbered as the A4082. This heads south then east to cross the railway line and then splits, with one-way streets diverging from here to meet the A483 to the south of the town centre just to the west of Powys County Hall.

The shorter northern branch's original end-point lies just beyond a level crossing some 700 m north of Llandrindod railway station, but a new 'mini-bypass' incorporating a bridge over the railway now meets the A483 at a roundabout 1.3 km north of the station. Some maps, like the one on the right, do class this as being part of the A4081 whereas others claim it to be unclassified.