Bridge over Lower Clydach below Glynmeithrim Uchaf is a Grade II listed building in the Swansea local planning authority area, Wales. First listed on 23 May 2003. Bridge.

Bridge over Lower Clydach below Glynmeithrim Uchaf

WRENN ID
graven-moulding-peregrine
Grade
II
Local Planning Authority
Swansea
Constituency
Gower MP: Tonia Antoniazzi (Lab)
Country
Wales
Date first listed
23 May 2003
Type
Bridge
Address
Bridge over Lower Clydach below Glynmeithrim Uchaf, Cwm Clydach, Mawr
OS grid reference
SN 684 058
Coordinates
51.7361, -3.90633
Source
Cadw listing

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

Description

This is a humped road bridge made of rubble stone, featuring a broad single arch supported by long stone voussoirs and a thin crown. The bridge has stone abutments and low rubble stone parapets, which are now only visible on the southwest side.

Local climate

Bridge over Lower Clydach below Glynmeithrim Uchaf sits in one of the wettest parts of the UK, with an average of 1,400 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.

It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 8 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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  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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