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Bont Fechan

A Grade II Listed Building in Llanystumdwy, Gwynedd

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Latitude: 52.9177 / 52°55'3"N

Longitude: -4.2873 / 4°17'14"W

OS Eastings: 246313

OS Northings: 338039

OS Grid: SH463380

Mapcode National: GBR 5H.N918

Mapcode Global: WH44D.3XQL

Entry Name: Bont Fechan

Listing Date: 19 October 1971

Last Amended: 31 March 1999

Grade: II

Source: Cadw

Source ID: 4365

Building Class: Transport

Location: Located on a cut off section of the main A497 Cricieth to Pwllheli road, SE of the village of Llanystumdwy, and formerly carrying the road over the Afon Dwyfor.

County: Gwynedd

Town: Criccieth

Community: Llanystumdwy

Community: Llanystumdwy

Traditional County: Caernarfonshire

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Probably built during the late C17 or early C18, and widened in 1780 on the E side, at which time the S arch and N culvert were reconstructed. Repaired in the 1880s, and finally by-passed in July 1961 by the new Llanystumdwy by-pass.


The bridge consists of three major segmental arches of rubble voussoirs, the earlier on the E flush with the spandrels, the later on the W set back under a regulating course. Each major arch spans 4.3m with a rise of 1.8m above the river level, and supported by two water piers, the S one larger and higher than the more northerly, and each chamfered back to the flush stone parapet, coped with large unshaped stones. At the S end there is a lower segmental flood arch, and at the N end, a small culvert, the whole totalling approximately 24.4m in length (80ft). The bridge was widened by 1.74m on the W side creating a carriageway width over of 3.9m with 0.43m parapets each side.

Reasons for Listing

Included as a good substantial and well-detailed late C17/early C18 county bridge of vernacular character.

Other nearby listed buildings

  • II Gwynfryn Lodge
    The lodge stands at the S end of the long drive to Plas Gwynfryn, 500m W of Llanystymdwy village.
  • II Pont Rhyd-y-croesau
    The bridge carries the road running NW from Llanystumdwy across the deep wooded glen of the Afon Dwyfor.
  • II Ysgubor-hen
    The house stands on rising ground mid-way between Llanystumdwy and Chwilog, and 400m N of the toll house on the A497 crossroads.
  • II Old Tollgate Cottage
    The tollgate cottage was erected c1808 to control access to the Portmadoc to Porthdinllaen road, B4354.
  • II Ysgol Llanystumdwy
    The school lies at the W end of the village, on the N side of the road.
  • II No 2, Minafon
    The pair of cottages stands at the W end of the village on the S side of the main road opposite the school.
  • II No 1, Minafon
    The pair of cottages stands at the W end of the village on the S side of the main road opposite the school.
  • II Churchyard Wall and Lychgate to the Church of St John the Baptist
    The churchyard wall separates the encircling road from the oval graveyard on the S; the lychgate provides access to the churchyard from the road on the W side, opposite the tower.

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