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Cof Cymru: National Historic Assets of Wales · Wales

Pentrefelin Tramway Viaduct

Llantysilio, Denbighshire, Wales

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
22 April 1998
Locality
Pentrefelin
Town
Llangollen
Community
Llantysilio
Unitary authority
Denbighshire
Country
Wales
Coordinates
52.98498, -3.18546
Cadw reference
19685

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

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This record in Cadw's own full report ↗

Cadw's description

The viaduct crosses the valley of the River Eglwyseg immediately NE of the junction of the A542 and the B5103 at Pentrefelin.

The horse tramway was designed by Henry Dennis for John Taylor & Son, and constructed in 1852 to carry slate from the Upper Cambrian slate quarries at Clogau, at Oernant (Maesyruchan), Moel-y-faen, and from above Valle Crucis, running 2.8km to their Llangollen Slab and Slate Works and wharf on Llangollen Branch of the Ellesmere (Shropshire Union) Canal. near Pentrefelin Bridge. It now survives as a landscaped item in gardens.

A rubble stone revetted embankment approximately 130m long, the track raised above the stone-on-edge copings by a further embankment. The wall is punctured by three spaced arches, the centre arch wider and spanning the river Eglwyseg, and one narrower flood arch each side. All arches have rusticated and margin dressed stone quoins and voussoirs to the semi-circular arch, the keystone alone slightly emphasised, all flanked by pilaster buttresses. The centre arch is said to carry the date 1857. The S side has 7 large raking buttresses, perhaps a later addition.

Included as a well preserved example of a horse tramway viaduct, and of significance as a relic of the slate extraction industry which once formed a major part of the economic life of the Llangollen district.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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