TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

Pont Mwnwgl-y-llyn

Llangywer, Gwynedd, Wales

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

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Pont Mwnwgl-y-llyn, Llangywer, 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
Llangywer
Community
Llangywer
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.90237, -3.59278
Cadw reference
4675

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)
  • 1899 · 136 Bala (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Redundant road bridge, sited at the junction between B4403 and B4391, and spanning the Afon Dyfrdwy at the E end of Lake Tegid.

Probably late C18 road bridge.

Large road bridge built of coursed and squared local stone. Three spans with segmental arches and angled cutwaters on both sides. Plain parapet with stone slab coping over a continuous dripcourse.

Listed as a well preserved late C18 road 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
See your own family's places on a living map