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Cof Cymru: National Historic Assets of Wales · Wales

Former Tremadoc Tramway bridge over drainage ditch

Porthmadog, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
No class recorded
Date of designation
26 September 2005
Locality
Tremadog
Town
Porthmadog
Community
Porthmadog
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.93470, -4.14149
Cadw reference
85376

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

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "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).

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This record in Cadw's own full report ↗

Cadw's description

To the N of Pensyflog Farm, on a footpath between Tremadog and Porthmadog, approximately 0.5km S of Tremadog Market Square.

A simple bridge built over a drainage ditch for the Tremadoc Tramway of c1845, which carried iron ore from nearby Llidiart Ysbytty to Porthmadog harbour. From the late 1850s it was incorporated into the slate-carrying Gorseddau horse-drawn tramway, which became locomotive powered in the 1870s and operated until the 1890s. It is now a footpath.

Effectively a short culvert, the entrances of which have round arches with freestone voussoirs, but mainly concealed by vegetation.

Listed for its special interest as one of the few surviving structures in Porthmadog associated with the former mineral railways supplying the port.

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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