Railway Bridge over River Irfon is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 19 January 2001. Bridge.

Railway Bridge over River Irfon

WRENN ID
tenth-mullion-ash
Grade
II
Local Planning Authority
Powys
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
19 January 2001
Type
Bridge
Address
Railway Bridge over River Irfon, Llanwrtyd Wells, Builth Wells
OS grid reference
SN 879 462
Coordinates
52.1031, -3.63679
Source
Cadw listing

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

Description

The Railway Bridge over the River Irfon is a single-span arched cast iron structure. It features a high segmental arch made from substantial jointed I-section beams, with open lattice-work in the spandrels. The two faces of the bridge are connected by round-section struts. It has a flat cantilevered deck, with a moulded cast iron deck plate that supports iron openwork parapets, which include panels with diagonal cross-members. The abutments are constructed from snecked rock-faced stone, and the iron arches spring from ledges that have dressed stone copings. The bridge also has stone end piers topped with rock-faced capstones, and the interior sides are lined with blue brick.

Local climate

Railway Bridge over River Irfon sits in one of the wettest parts of the UK, with an average of 1,200 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% 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.

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
Create free account

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.

See all similar buildings →

this building   1 similar   nearby listed buildings

Nearby listed buildings

  1. Llanwrtyd Wells Station & North Platform Grade II 367 m
  2. Llanwrtyd War Memorial Institute Grade II 458 m
  3. Pont Rhyd y Fferau Grade II 476 m
  4. Capel Bethel including attached vestries to rear and forecourt wall and railings Grade II 478 m
  5. Neuadd Arms Hotel Grade II 507 m
  6. Dol y Coed Grade II 945 m
  7. Former Dol y Coed Pump Room Grade II 1.1 km
  8. Dol y Coed Well-House Grade II 1.2 km
  9. Former Pumphouse at Victoria Wells Grade II 1.5 km
  10. Church of St David Grade II* 2.2 km