Culvert taking Blaen Bran under Monmouthshire and Brecon Canal is a Grade II listed building in the Torfaen local planning authority area, Wales. First listed on 31 January 2003. Culvert.
Culvert taking Blaen Bran under Monmouthshire and Brecon Canal
- WRENN ID
- scarred-jamb-woodpecker
- Grade
- II
- Local Planning Authority
- Torfaen
- Constituency
- Torfaen MP: Nick Thomas-Symonds (Lab)
- Country
- Wales
- Date first listed
- 31 January 2003
- Type
- Culvert
- Address
- Culvert taking Blaen Bran under Monmouthshire and Brecon Canal, Five Locks, Cwmbran, Pontnewydd
- OS grid reference
- ST 287 966
- Coordinates
- 51.66417, -3.03103
- Source
- Cadw listing
Description
This structure is a culvert that carries the Blaen Bran stream beneath the Monmouthshire and Brecon Canal. It is built from rubble stone and features a low tunnel with an arched opening on the downstream side, which is set under a high rubble stone embankment wall that has a renewed stone parapet. The abutments on either side of the culvert are splayed, as are the parapets above. The arch is constructed with stone voussoirs, and the walling is made of squared stone laid in courses. The upstream side of the culvert is significantly lower and does not have a parapet. The walling above the arch has been partly replaced with red brick, and it also has splayed abutments.
Local climate
Culvert taking Blaen Bran under Monmouthshire and Brecon Canal receives an average of 940 mm of rain a year. This makes it wetter than 73% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 72% of listed buildings.
It experiences an average of 41 freeze-thaw cycles a year, more than 79% of listed buildings. Of these, 19 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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- 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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Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
- 1 Tunnel carrying Brynich stream under Brecon & Abergavenny Canal (partly in Brecon community)
- 2 Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal (partly in the Llantarnam community)
- 3 Aqueduct over Dowlais Brook on Monmouthshire and Brecon Canal, partly in Cwmbran Central Community
- 4 Abercarn Aqueduct and Bridge (partly in Abercarn Community)
- 5 Abercarn Aqueduct and bridge (partly in Crosskeys Community)
this building 1 similar nearby listed buildings
Nearby listed buildings
- Milepost north of Five Locks
- Church of the Holy Trinity
- Canal Tunnel between Sebastopol and Cwmbran, including attached revetment walls
- Milepost on Monmouthshire and Brecon Canal
- Barn on S side of Bevan's Lane
- Tir-brychiad
- Canal Bridge No 47 on Monmouthshire and Brecon Canal
- Ty William Ambrose Farm (aka Hanbury Farm)
- Pontrhydyrun House
- Glyn Bran Farmhouse