Pontygwaith Overbridge is a Grade II listed building in the Merthyr Tydfil local planning authority area, Wales. First listed on 20 February 2003. Bridge.

Pontygwaith Overbridge

WRENN ID
under-minaret-shade
Grade
II
Local Planning Authority
Merthyr Tydfil
Constituency
Merthyr Tydfil and Aberdare MP: Gerald Jones (Lab)
Country
Wales
Date first listed
20 February 2003
Type
Bridge
Address
Pontygwaith Overbridge, Penydarren Tramroad, Treharris
OS grid reference
ST 080 977
Coordinates
51.67105, -3.33046
Source
Cadw listing

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

Description

Pontygwaith Overbridge is a road bridge that spans a former tramroad and is adjacent to a railway bridge. It is constructed of rubble stone and features a tall, narrow arch made with stone voussoirs. The parapets of the bridge slope upwards to align with the parapets of the railway bridge.

Local climate

Pontygwaith Overbridge sits in a wetter-than-average part of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 83% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 85% of listed buildings. Of these, 22 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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Nearby listed buildings

  1. Pontygwaith Rail Overbridge Grade II 16 m
  2. Pont y Gwaith Grade II 183 m
  3. Quakers Yard Railway Viaduct Grade II* 1.5 km
  4. Greenfield Bridge, Penydarren Tramroad Grade II* 1.5 km
  5. Aberfan Fawr Farmhouse Grade II 1.6 km
  6. Barn Range at Aberfan Fawr Farmhouse Grade II 1.6 km
  7. Tabernacle Independent Chapel. Grade II 2.0 km
  8. Treharris Public Library Grade II 2.0 km
  9. Victoria Bridge, Penydarren Tramroad Grade II* 2.0 km
  10. Lock House Grade II 2.0 km