Eastern junction of the B4582 with the A487 at Croft
The B4582 is a rural road in north Pembrokeshire, providing a hilly short-cut to the A487, which follows a more southerly course via Eglwyswrw. The road was originally unclassified but gained its current number in 1935.
The route starts at a crossroads on the A487 at Temple Bar, to the east of Newport / Trefdraeth, and follows a narrow road northwards to reach Nevern. It runs between the pub and Afon Nyfer before a sharp right-hand bend (the road widens here deliberately to provide a larger space for turning) takes us across a narrow bridge over the river. After passing the church we bear round to the right and almost return to the river before a sharp left-hand bend takes us through a wood out of the valley.
We level out on reaching open country and follow a surprisingly straight route to the northeast. After going over the top of a hill we reach Glanrhyd, where we leave the Pembrokeshire Coast National Park, which we have been in for the whole of the route so far. There's not long until journey's end at a T-junction back on the A487 at Croft, a couple of miles away from Cardigan.