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Latitude: 53.1387 / 53°8'19"N
Longitude: -4.274 / 4°16'26"W
OS Eastings: 247985
OS Northings: 362589
OS Grid: SH479625
Mapcode National: GBR 5J.6684
Mapcode Global: WH43F.BC0M
Plus Code: 9C5Q4PQG+FC
Entry Name: South portal of former railway tunnel beneath Castle Square
Listing Date: 3 May 2002
Last Amended: 3 May 2002
Grade: II
Source: Cadw
Source ID: 26618
Building Class: Transport
ID on this website: 300026618
Location: Opposite Slate Quay to the SE of Castle Square and below Segontium Terrace.
County: Gwynedd
Town: Caernarfon
Community: Caernarfon
Community: Caernarfon
Built-Up Area: Caernarfon
Traditional County: Caernarfonshire
Tagged with: Railway tunnel Tunnel portal
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.
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.
Listed for group value with other items contributing to the industrial and mercantile character of Slate Quay.
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.
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