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Castle Malgwyn Bridge is a post-medieval stone bridge crossing a watercourse in Wales. The structure spans bedrock of Ashgill formation—mudstone, siltstone and sandstone deposits laid down in the Ashgill period, which here provide a stable foundation for the crossing. The bridge is constructed in the traditional Welsh stone-building manner characteristic of such crossings, serving local transport needs across this challenging terrain.
The site's geology has long determined its importance as a crossing point. The underlying Ashgill rocks, though varied in composition, provided adequate bearing for the bridge's construction and have supported its structure through centuries of use. The waterway's course through this rocky substrate would have made fording difficult, making a formal bridge crossing essential for regional communication.
Castle Malgwyn Bridge is protected as a scheduled monument by Cadw, the Welsh historic monuments service, under reference PE383, recognising its significance within Wales's built heritage. The bridge represents the practical engineering responses of post-medieval communities to their landscape, demonstrating the sustained importance of this particular crossing in the local economy and transport networks.
Castle Malgwyn Bridge is a scheduled monument protected by Cadw under reference PE383. View the official record →
Castle Malgwyn Bridge is a post-medieval stone bridge crossing a watercourse in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference PE383.
Castle Malgwyn Bridge dates from the post medieval/modern period, and is classified as a bridge. It is one of over 32,000 scheduled monuments protected across the UK.
Castle Malgwyn Bridge is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is PE383.
Several scheduled monuments lie within 10 km, including Maen Colman (5.3 km), Parc-y-Domen (5.5 km), Inscribed Stone in St Llawddog's Churchyard, Cenarth (5.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castle Malgwyn Bridge's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Castle Malgwyn Bridge stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.