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Cof Cymru: National Historic Assets of Wales · Wales

Bridge at Plas Tregayan

Llanddyfnan, Isle of Anglesey, Wales

A Grade II listed building in Tregaian, Llanddyfnan, Isle of Anglesey, designated on 11 June 2002.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Bridge at Plas Tregayan, Llanddyfnan, Isle of Anglesey, 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
11 June 2002
Locality
Tregaian
Community
Llanddyfnan
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.28892, -4.31419
Cadw reference
26727

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 1883 map "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 93 Holyhead (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

In the grounds of Plas Tregayan and carrying the main driveway towards Lower Lodge; spanning the Afon Erddreiniog c450m ESE of the house.

C19, probably contemporary with the development of the adjacent house and estate buildings; built for Admiral Lloyd, the owner and occupier in the Tithe Apportionment of 1839.

Small roadbridge of a single span; voussoir arch with slightly advanced keystone. Low parapet wall of rubble masonry.

Included as a good C19 roadbridge which forms an important component part of the estate at Plas Tregayan. Built to a coherent design and echoing the C19 character of the house for which it was built; a reflection of the expanding fortunes of the estate at that time.

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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