Former Penllwyn Tramroad Viaduct at Nine Mile Point is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 16 September 1999. Viaduct.
Former Penllwyn Tramroad Viaduct at Nine Mile Point
- WRENN ID
- grim-latch-holly
- Grade
- II
- Local Planning Authority
- Caerphilly
- Constituency
- Caerphilly MP: Chris Evans (Lab)
- Country
- Wales
- Date first listed
- 16 September 1999
- Type
- Viaduct
- Address
- Former Penllwyn Tramroad Viaduct at Nine Mile Point, Ynysddu
- OS grid reference
- ST 203 910
- Coordinates
- 51.61297, -3.15172
- Source
- Cadw listing
Description
The former Penllwyn Tramroad Viaduct at Nine Mile Point is a notable structure featuring a high single span river arch made of stone, reinforced with brick and buttressed on each side. The arch includes an impost band that is supported by corbels. Above the later brick reinforcement, the stone voussoirs of the earlier arch are visible, and a string course runs above, defining the parapet, which is railed and now serves as a footpath. The viaduct is supported by four deep stone abutments.
Local climate
Former Penllwyn Tramroad Viaduct at Nine Mile Point sits in a wetter-than-average part of the UK, with an average of 1,060 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 81% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 59% of listed buildings. Of these, 13 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
Sign in or create a free account to unlock:
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings