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Llangynidr Bridge
River Usk, Forge Road, Llangynidr, Powys, Wales, UK
Llangynidr Bridge
associated engineer
Not known
date  circa 1700
UK era  Stuart  |  category  Bridge  |  reference  SO151203
photo   Crown copyright: Royal Commission on the Ancient and Historical Monuments of Wales | Hawlfraint y Goron: Comisiwn Brenhinol Henebion Cymru
Llangynidr Bridge carries the B4560 over the River Usk, linking Llangynidr with Bwlch in the Brecon Beacons National Park. The present six-span masonry bridge replaced an earlier structure thought to be a packhorse bridge dating from around 1600. Though narrow, the bridge is still used by vehicle the nearest public road crossings of the river are at Llansantffraed, 7km to the north west, and Crickhowell, 8km to the east.
Llangynidr was part of the Hundred of Crickhowell, the body responsible for building and repairing its bridge. The present bridge was constructed around 1700 and is listed in the Report of Sessions as having been repaired in 1707. It is 69m long, ramping up in the centre and carrying a roadway only 2.4m wide.
The six segmental arches vary in span, and rise high above the flood-prone river between massive stone piers. Triangular cutwaters on both sides of each pier rise to the full height of the solid parapet walls, providing refuges at road level.
The outer arches are smallest at 6.7-6.8m and the central arch spans range from 8.8m to 9.3m. The arch rings have two courses of voussoirs, with the shallower outer ring overhanging the inner ring.
In 1952, Llangynidr Bridge received Grade II listing, reassessed as Grade I in 2003.
Contractor: William Powell, Llangattock
Research: ECPK
"A History of the County of Brecknock" by Theophilus Jones, W. & G. North, 1809
reference sources   CEH W&WCEH Wales

Llangynidr Bridge