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Cildeudy tunnel

A Grade II Listed Building in Llangynwyd Lower (Llangynwyd - Isaf), Bridgend

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Latitude: 51.5563 / 51°33'22"N

Longitude: -3.603 / 3°36'10"W

OS Eastings: 288967

OS Northings: 185371

OS Grid: SS889853

Mapcode National: GBR HC.F2G5

Mapcode Global: VH5HB.H4MS

Plus Code: 9C3RH94W+GR

Entry Name: Cildeudy tunnel

Listing Date: 23 October 1998

Last Amended: 23 October 1998

Grade: II

Source: Cadw

Source ID: 20742

Building Class: Industrial

Location: The tunnel runs under the Cildeudy Road immediately W of its junction with the main A4063 Maesteg Road, at the S end of Goetre-hen.

County: Bridgend

Town: Llangynwyd Lower

Community: Llangynwyd Lower (Llangynwyd - Isaf)

Community: Llangynwyd Lower

Locality: Goetre-hen

Traditional County: Glamorgan

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The tunnel was built by Sir Robert Price, industrialist, MP for Herefordshire between 1837 and 1847, to carry his private line under Cildeudy Road to transport coals from Bettws Colliery to his ironworks at Tondu. The private tramway was built when Sir Robert, originally a major shareholder in the Duffryn Llynvi and Porthcawl Tramway, considered the level of haulage tolls charged by the Duffryn Llynvi and Porthcawl Railway were too great to be borne.


The tramway tunnel is built of local stone, and is approximately 42.5m long and 2.4m wide, the arch intrados reaching approximately 2.55m above the track bed. Each portal consists of a semicircular arch of regular ashlar voussoirs, 33cm deep with an emphasised drop keystone, and rises from hammer-dressed springers. The retaining wall either side of the N portal is curved and includes refactory brick wasters from Price's brickworks at Tondu, of irregular sizes, including 290 x 85mm, 120 x 350mm and the largest at 340 x 410mm. One is impressed with the digits S[3]8, another 30. The water leet serving the ironworks, which elsewhere runs parallel to the tramway, is conducted through the same tunnel below the level of the rails.

Reasons for Listing

Included as one of the best preserved tramroad tunnels in S Wales.

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