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Cof Cymru: National Historic Assets of Wales · Wales

Pont Fawr

Llandderfel, Gwynedd, Wales

A Grade II* listed building in Llandderfel, Gwynedd, designated on 20 October 1966.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Pont Fawr, Llandderfel, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II*
Broad class
Transport
Date of designation
20 October 1966
Locality
Llandderfel
Community
Llandderfel
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.91710, -3.51553
Cadw reference
4658

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "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).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1963 · Map No. 32 - Local Government Commission for Wales : [Definitive maps showing proposed… (National Library of Scotland)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Spanning the River Dee approximately 0.5km S of Llandderfel village, and carrying the Bala - Corwen road.

Imposing road bridge of two periods; the primary, downstream bridge is probably of second-half C17 date; this was doubled in width on the upstream side probably in the mid or third-quarter C18.

Fine road bridge of 4 arches, the central two taller and wider than those flanking; of rubble construction, the arches of wide segmental type and having rough-dressed voussoirs recessed below arch rings of narrow stones. Both up- and down-stream sides have triangular cutwaters. Rubble parapets with slate-slab copings, continuing as revetment parapets flanking the road as it curves to the E at the southern end of the bridge. At the northern end the upstream parapet curves to the W forming a squinch effect, the result of modern widening at this point.

Listed as an exceptionally-fine C17-C18 four-arch masonry bridge.

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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