Pont Llanglydwen (partly in Llanboidy Community) is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 10 February 2004. Bridge.

Pont Llanglydwen (partly in Llanboidy Community)

WRENN ID
eastward-corbel-torch
Grade
II
Local Planning Authority
Carmarthenshire
Constituency
Caerfyrddin MP: Ann Davies (PC)
Country
Wales
Date first listed
10 February 2004
Type
Bridge
Address
Pont Llanglydwen (partly in Llanboidy Community), Cilymaenllwyd
OS grid reference
SN 180 267
Coordinates
51.90926, -4.64708
Source
Cadw listing

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

Description

Pont Llanglydwen is a double-carriageway bridge built from rubble stone, featuring a single span that ramps up to the center. The bridge has a wide segmental arch made of narrow voussoirs, with blind roundels located in the spandrels. The abutments are enhanced by broad shallow pilasters that flank circular flood apertures, which also have voussoirs and are partially filled with cement render. Below the parapet, there is a continuous raised band. The downstream side retains a stone coping, while the upstream side has been replaced with concrete. The terminal piers are topped with saddleback copings. Curved stone approaches with copings are present on both sides of the bridge.

Local climate

Pont Llanglydwen (partly in Llanboidy Community) 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 92% of listed buildings.

It experiences an average of 24 freeze-thaw cycles a year, fewer than 74% of listed buildings. Of these, 10 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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