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Cof Cymru: National Historic Assets of Wales · Wales

Three-Arch Aqueduct over Vyrnwy Flood Plain (Southern Arches) New Bridge Vyrnwy

Carreghofa, Powys, Wales

The record

Designation
Listed building, Grade II
Broad class
Water Supply and Drainage
Date of designation
5 April 1993
Community
Carreghofa
Unitary authority
Powys
Country
Wales
Coordinates
52.77013, -3.10737
Cadw reference
14204

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

Sited between B4398 road at Williams Bridge and the River Vyrnwy.

Constructed originally 1794-6 by John and Thomas Dadford, engineers of Cardiff and Newport, for the Montgomeryshire Canal Company but much repaired and totally refaced in blue brick in 1890 (stone date plaque set over the western face of the centre arch) by the Shropshire Union Railway and Canal Company.

Central core or red brick arches, blue brick facings with brick band above the arches, chamfered stone cappings. Three elliptical arches with central raking buttresses and sweeping abutments with stone pyramidal caps. Above each arch a pair of floreated terminals to tie-rods.

Included for group value as an integral structure on the Montgomeryshire Canal adjacent to the Vyrnwy Aqueduct. It also demonstrates the structural development of canal engineering.

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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