Bont-ar-Towy (partly in Llangadog Community) is a Grade II* listed building in the Carmarthenshire local planning authority area, Wales. First listed on 8 July 1966. Bridge.

Bont-ar-Towy (partly in Llangadog Community)

WRENN ID
frozen-tallow-poplar
Grade
II*
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
8 July 1966
Type
Bridge
Address
Bont-ar-Towy (partly in Llangadog Community), Ashfield Row, Llanwrda, Llansadwrn
OS grid reference
SN 695 286
Coordinates
51.94075, -3.89973
Source
Cadw listing

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

Description

Bont-ar-Towy is a Grade II* listed five-arched road bridge, partly located in the Llangadog Community. The main section of the bridge features three broad segmental arches, while there are two additional arches over the eastern flood-plain. The main bridge is well-crafted, showcasing flush cut-stone voussoirs for the arches, small coursed stones in the spandrels, and a raised band beneath the parapet. It has raised dividing piers above four triangular cutwaters on each side. The cutwaters have stepped triangular tops, with the outer ones being more elaborate, featuring half-pyramid tops topped with half-sphere finials, which are divided laterally by a square slab. Although the parapets are likely rebuilt, one includes a datestone from 1819, and the rock-faced limestone copings appear to be from the later 19th century. There are raised ridged blocks over the end piers. The smaller two-arch bridge to the east is similar, with matching parapets but lacks the band under the parapet, and the parapets are splayed out at both ends of the bridge.

Local climate

Bont-ar-Towy (partly in Llangadog Community) sits in one of the wettest parts of the UK, with an average of 1,450 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 42 freeze-thaw cycles a year, more than 81% of listed buildings. Of these, 21 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.

More on this building

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