History

Part of the Central Wales Extension Railway opened from Builth to Garth in 1866, and extended to Llanwrtyd in 1867. The line was operated by the London and North Western Railway and from 1922 by the London, Midland and Scottish. The cast iron girders were cast in 1866 by the Brymbo Ironworks (name plates on each girder).

Exterior

A skewed 3-bay viaduct with snecked rock-faced shale piers and abutments, iron girders and brick parapet. The piers have wider bases with pointed cutwaters and are extended out on the S side to accommodate an extension of the piers for a second track. The abutments are likewise extended on the S side, beyond which they curve outwards and downwards and have rock-faced copings (brick to the NW side). The piers have freestone caps below the deck. The deck is constructed of girders and narrow brick jack arches. The parapets have shallow terminal and intermediate piers with brick copings, the terminal piers having coarse concrete saddleback copings.

Reasons for Listing

Listed as a substantial railway bridge notable for the early use of flat girders cast at Brymbo to carry the deck, and for group value with a similar bridge spanning the Irfon 400m SW.

External Links

• Cadwr Listing
• Wikidata Q29501369

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

Recommended Books

• 
  Setting up a Listed Building Heritage Partnership Agreement: Historic England Advice Note 5
• 
  The Victorian House Manual (2nd Edition): How They Were Built, Improvements & Refurbishment, Solutions to All Common Defects - Includes Relevant ... ... Properties (Haynes Manual) (Haynes Manuals)
• 
  Listed Buildings: The Law and Practice of Historic Buildings, Ancient Monuments and Conservation Areas
• 
  Cornwall (Pevsner Architectural Guides) (Pevsner Architectural Guides: Buildings of England)
• 
  Cambridgeshire (Pevsner Architectural Guides) (Pevsner Architectural Guides: Buildings of England)
• 
  ENGLAND GUIDE TO POST WAR LISTED: A Guide to Post-war Listed Buildings