History

Part of the 'Carnarvon Town Line' built 1865-70 to link the Carnarvon & Llanberis Railway with the Bangor & Caernarvon Railway. The tunnel portal was built in 1869, the date on an iron girder cast at the Union Ironworks on nearby Slate Quay. The London & North Western Railway was a principal investor in the line and managed the project. It took over the line in the 1870s. Following closure of the railway the tunnel has been re-used as a road tunnel.

Exterior

Portal of former double-tracked railway of snecked rock-faced stone. The entrance has a cast iron girder supporting jack arches in the tunnel, inscribed 'de Winton & Co 1869'. Above is a thick roll-moulded band, and modern railings above coping stones, while the opening is flanked by shallow buttresses, of which the L-hand is set back from the end while the R-hand is built into the revetment wall below Segontium Terrace. The L side wall has 4 recesses with brick arches below a roll-moulded band continuous with the entrance elevation, and has coping stone with railings.

Reasons for Listing

Listed for group value with other items contributing to the industrial and mercantile character of Slate Quay.

External Links

• Cadwr Listing
• Wikidata Q29503496

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

• 
  Georgian Style and Design for Contemporary Living
• 
  London 6: Westminster (Pevsner Architectural Guides: Buildings of England): Westminster v. 6
• 
  Gloucestershire 2: The Vale and The Forest of Dean: Vale and Forest of Dean Pt. 2 (Pevsner Architectural Guides: Buildings of England)
• 
  London 3: North West: North West v. 3 (Pevsner Architectural Guides: Buildings of England)
• 
  Worcestershire Revised Edition (Buildings of England) (Pevsner Architectural Guides: Buildings of England)
• 
  Building Small Projects (New Best of Fine Woodworking)