Abercamlais is set in parkland to the north of the A40 between Sennybridge and Brecon, just within the northern boundary of the Brecon Beacons National Park. It is a Grade 1 listed building, originally dating from the middle ages, but altered extensively early in the early 18th Century with additions in Victorian times. It is set in extensive grounds, sheltered from the prevailing winds by mature beech and oak trees.

In the grounds of the estate is a slender suspension footbridge across the River Usk. It is attributed to Crawshay Bailey, the famous iron master of Nantyglo in the eastern Ebbw valley.

The suspension cables for the bridge consist of two 28mm diameter wrought iron rods set 812mm vertically apart, one pair each side. The threaded end of the rods pass through the cast iron end posts and are tensioned against the posts by nuts. The posts are 1.83m high. The bridge spans 24.4m.

Both the walkway and the structure that supports it are made entirely of iron. Every 3m along the bridge, iron rods - hooked over the top cables and looped around the lower ones - carry 100mm x 9mm flat iron deck-bearers that run across the width of the bridge. In between the rods, short hangers attached to the lower cables support smaller section intermediate bearers.

The walkway consists of four flat iron planks running the length of the bridge. These are spaced apart and provide a walkway almost half a metre wide. The planks are rivetted to the wider bearers but sit freely on the others.