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Rhuddlan Bridge is a medieval bridge located in Wales, protected as an ancient monument by Cadw under reference FL018. The structure spans across underlying Permian bedrock composed of interbedded sandstone and conglomerate, geological formations that date back approximately 300 million years. This foundation of durable Permian rock would have provided a stable base for medieval bridge construction, essential for maintaining the structure's integrity across what was likely a significant watercourse.
The bridge represents an important element of medieval Welsh infrastructure and settlement patterns. Such crossing points facilitated commerce, communication and military movement between communities, and their construction often required substantial investment and engineering knowledge. The choice of location would have been determined by the landscape's natural features, including the river course and underlying geology.
As a protected monument under Cadw's stewardship, Rhuddlan Bridge contributes to our understanding of medieval Welsh engineering and settlement history. The site preserves evidence of construction techniques and materials adapted to local geological and hydrological conditions, offering insights into how medieval builders worked with the natural landscape to create lasting infrastructure.
Rhuddlan Bridge is a scheduled monument protected by Cadw under reference FL018. View the official record →
Rhuddlan Bridge is a medieval bridge located in Wales, protected as an ancient monument by Cadw under reference FL018.
Rhuddlan Bridge dates from the medieval period, and is classified as a bridge. It is one of over 32,000 scheduled monuments protected across the UK.
Rhuddlan 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 FL018.
Several scheduled monuments lie within 10 km, including St Asaph Bridge (4 km), Tyddyn Bleiddyn Burial Chamber (5.7 km), Bedd-y-Cawr Hillfort (6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Rhuddlan 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.
Rhuddlan Bridge stands on Permian Rocks (Undifferentiated), bedrock that formed in the Permian. The rock here is sandstone and conglomerate, interbedded.