Workhouse Bridge (Canal Bridge No.136) is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 17 December 1998. Canal bridge.

Workhouse Bridge (Canal Bridge No.136)

WRENN ID
unlit-rotunda-peregrine
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
17 December 1998
Type
Canal bridge
Address
Workhouse Bridge (Canal Bridge No.136), Llanddetti, Llangynidr, Powys
OS grid reference
SO 134 198
Coordinates
51.8703, -3.259
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Workhouse Bridge, also known as Canal Bridge No. 136, is a hump-backed bridge made of rubble sandstone, featuring a round arch and a low parapet. The arch is constructed with thin voussoirs and has a keystone on the east side. The abutments curve outward on both sides, and the parapet includes square end piers. On the east side, there is a cast iron plaque displaying the bridge number in relief. Additionally, stone steps have been added to the towpath on the west side.

Local climate

Workhouse Bridge (Canal Bridge No.136) sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 78% of listed buildings.

It experiences an average of 57 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 32 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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