Smart’s Bridge is a Grade II* listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 27 July 2000. A Victorian Bridge.

Smart’s Bridge

WRENN ID
standing-finial-stoat
Grade
II*
Local Planning Authority
Brecon Beacons National Park
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
27 July 2000
Type
Bridge
Period
Victorian
Address
Smart’s Bridge, Clydach, Llanelly, Monmouthshire
OS grid reference
SO 228 132
Coordinates
51.81274, -3.12023
Source
Cadw listing

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

Description

Smart's Bridge is a cast-iron bridge built in 1824, spanning 2.9 metres over the rocky bed of the River Clydach. It features a segmental arch with decorative spandrels that display repeated lancets, with the date 1824 inscribed on the crown of the arch on both sides. The surface of the carriageway is iron-plated and grooved for rails, with transverse grips on either side of the grooves. The bridge is supported by rubble piers that are set on the rock. In 1987, simple iron railings were added, designed to resemble the original ones, and these railings are terminated in lengths of rubble walling.

Local climate

Smart’s Bridge sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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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