Ynysafan Tramroad Bridge is a Grade II listed building in the Neath Port Talbot local planning authority area, Wales. First listed on 9 August 1993. Boundary wall.

Ynysafan Tramroad Bridge

WRENN ID
stony-shingle-thyme
Grade
II
Local Planning Authority
Neath Port Talbot
Constituency
Aberafan Maesteg MP: Stephen Kinnock (Lab)
Country
Wales
Date first listed
9 August 1993
Type
Boundary wall
Address
Ynysafan Tramroad Bridge, Cwmavon
OS grid reference
SS 786 923
Coordinates
51.61662, -3.75358
Source
Cadw listing

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

Description

Ynysafan Tramroad Bridge is a bridge constructed from coursed rubble sandstone, featuring three elliptical arches made of dressed face voussoirs with rubble vaults that spring from two narrow piers and curving abutments. The bridge has dressed stone triangular cutwaters that step in towards the top on both sides of the piers. The parapets, which are made of rougher stonework and may have been added later, are partly missing. This bridge is unusually wide, suggesting it may have originally supported a double line of track. A modern steel footbridge has been built across the top, spanning the entire structure along the north side.

Local climate

Ynysafan Tramroad Bridge sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 22 freeze-thaw cycles a year, fewer than 77% 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.

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