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Pont Factory

A Grade II Listed Building in Llanllyfni, Gwynedd

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Latitude: 53.0477 / 53°2'51"N

Longitude: -4.282 / 4°16'55"W

OS Eastings: 247129

OS Northings: 352485

OS Grid: SH471524

Mapcode National: GBR 5H.D49Z

Mapcode Global: WH43T.6N7D

Entry Name: Pont Factory

Listing Date: 21 July 2000

Last Amended: 21 July 2000

Grade: II

Source: Cadw

Source ID: 23712

Building Class: Transport

Location: Road bridge and causeway on the A 487, spanning the Afon Lyni, between Llanllyfni and Penygroes.

County: Gwynedd

Community: Llanllyfni

Community: Llanllyfni

Traditional County: Caernarfonshire

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Shown on the 1840 Tithe Map, the bridge forms part of the establishment of the turnpike road by the improving landlords of the Bryncir Estate in the 1820s.


Roughly coursed rubblestone with saddleback coping to long abutments forming a raised causeway to north and south. The bridge itself is of regularly coursed blocks with piers, coped parapet and string course above a single-span segmental arch over the river, faced with rough-dressed voussoirs and keystone below a plain arch ring.

Reasons for Listing

Included as a very fine early C19 bridge on the former turnpike road.

Other nearby listed buildings

  • II Milestone
    Located on the south-east side of Ffordd Rhedyw (Rhedyw Road) in Llanllyfni to the north-east of the Church of St Rhedyw; set in a rubblestone boundary wall.
  • II* Church of St Rhedyw
    Prominently sited on a corner on Ffordd Rhedyw within a raised rubble-walled churchyard on sloping ground down towards the Afon Lyfni.
  • II Bryn Eglwys
    Located in the village of Llanllyfni on the south-east side of Ffordd Rhedyw (Rhedyw Road) directly opposite the Church of St Rhedyw.
  • II Disused Cottage immediately to north-east of Tan-y-Bryn
    Located on the other side of the yard/garden directly to the north-east of Tan-y-Bryn.
  • II Tan-y-Bryn
    Located at the end of a long farm track across pasture fields approximately 0.5km south-west of Penygroes.
  • II Arvon and adjoining outbuildings to the north
    Situated in a prominent position at the junction of Heol Buddog and Ffordd-y-Sir with gardens in front and the similarly detailed Bod Owen alongside, the highly patterned slate roofs of Arvon and its
  • II Bod Owen
    Situated in a prominent position at the junction of Ffordd-y-Sir and Heol Buddog with gardens in front and the similarly detailed Arvon alongside, the highly decorated slate roof of the building forms
  • II ,70,Ffordd Rhedyw (Rhedyw Road),Llanllyfni,Caernarfon,,LL54 6SG,23661
    Located in centre of village on the east side of Ffordd Rhedyw (Rhedyw Road).

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