Pentreheylin Bridge (No.97) over The Montgomeryshire Canal is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 5 April 1993. Bridge.

Pentreheylin Bridge (No.97) over The Montgomeryshire Canal

WRENN ID
fallen-wall-kestrel
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
5 April 1993
Type
Bridge
Address
Pentreheylin Bridge (No.97) over The Montgomeryshire Canal, Llandysilio
OS grid reference
SJ 255 194
Coordinates
52.76772, -3.10418
Source
Cadw listing

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

Description

Pentreheylin Bridge is a simple trabeated structure built over the Montgomeryshire Canal. It features "fish-bellied" cast iron girders with concrete infill. The bridge has plain decking and replacement timber handrails. The ramped rubble abutments curve out and end in splayed piers on the north side, while the south side is plain. The edge of the towpath is made of stonework.

Local climate

Pentreheylin Bridge (No.97) over The Montgomeryshire Canal receives an average of 850 mm of rain a year. This makes it wetter than 58% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 66% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 78% 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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