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Pont y Pair is a medieval bridge spanning a watercourse in Wales. The structure crosses bedrock of Caradoc Rocks, which comprises undifferentiated mudstone, siltstone and sandstone formed during the Caradocian period. These sedimentary layers provided the stable foundation upon which the bridge was constructed, whilst the varying hardness of the stone types would have influenced both the engineering approach and the durability of the crossing.
The bridge represents a key example of medieval infrastructure designed to facilitate communication and commerce across difficult terrain. Its position on Caradoc bedrock meant that builders encountered a mixture of geological conditions during construction; softer mudstones and siltstones alternate with harder sandstone bands, requiring skilled masonry to create a secure foundation for the arches and approaches.
Pont y Pair is protected as a scheduled monument under Cadw, the Welsh heritage organisation, under the reference CN032. This designation recognises its archaeological and historical significance as evidence of medieval engineering practice in Wales. The monument survives as testimony to the investment communities made in crossing watercourses during the medieval period, when such bridges were essential to the functioning of regional networks and local economy.
Pont y Pair is a scheduled monument protected by Cadw under reference CN032. View the official record →
Pont y Pair is a medieval bridge spanning a watercourse in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CN032.
Pont y Pair dates from the medieval period, and is classified as a bridge. It is one of over 32,000 scheduled monuments protected across the UK.
Pont y Pair 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 CN032.
Several scheduled monuments lie within 10 km, including Hafodlas Slate Quarry Mills and Associated Features (1.3 km), Fedw Deg Medieval House (3.4 km), Capel Garmon Chambered Tomb (3.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Pont y Pair'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.
Pont y Pair stands on Caradoc Rocks (Undifferentiated), bedrock that formed in the Caradocian. The rock here is mudstone, siltstone and sandstone.