Bridge 150 over the Montgomeryshire Canal is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 14 July 1997. Bridge.
Bridge 150 over the Montgomeryshire Canal
- WRENN ID
- stony-baluster-hyssop
- Grade
- II
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 14 July 1997
- Type
- Bridge
- Address
- Bridge 150 over the Montgomeryshire Canal, Dolforwyn, Llandyssil
- OS grid reference
- SO 150 942
- Coordinates
- 52.53961, -3.25469
- Source
- Cadw listing
Description
This is a cast-iron ‘fish-bellied’ beam bridge over the Montgomeryshire Canal. It features five original beams that support a renewed deck with a plywood soffit. The parapets are made up of timber posts and three rows of modern steel rails. The iron beams rest on splayed brick abutments topped with sandstone copings and padstones. To the south, there are cast iron rebates for stop planks, along with a sandstone block that has an iron ring, likely used for attaching boats. Beyond the bridge, there is a weir with wooden planks that leads down to the west.
Local climate
Bridge 150 over the Montgomeryshire Canal sits in a wetter-than-average part of the UK, with an average of 1,010 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 73% of listed buildings.
It experiences an average of 47 freeze-thaw cycles a year, more than 88% of listed buildings. Of these, 27 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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