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Merthyr Tramroad: Pont y Gwaith section and associated bridges is a post-medieval and modern tramroad in Wales, protected by Cadw as scheduled monument GM359. The route traverses geology of the South Wales Upper Coal Measures Formation, bedrock composed of mudstone, siltstone, sandstone, coal, ironstone and ferricrete laid down during the Westphalian period. This underlying mineral wealth, particularly coal and iron ore, determined the tramroad's construction and purpose.
The Pont y Gwaith section and its associated bridges represent the infrastructure that connected the industrial heartland of the Merthyr area to transport networks. Tramroads of this type were purpose-built to carry heavy loads of coal and iron from mines and furnaces to canal wharves and later railways, using gravity-worked inclines and horse-drawn trucks. The bridges surviving along this route provide evidence of the engineering solutions required to cross the steep-sided valleys characteristic of the South Wales coalfield.
These structures record the intensive industrial development that made Merthyr Tydfil one of the world's foremost iron-producing centres during the eighteenth and nineteenth centuries. The tramroad's survival, despite the landscape's subsequent transformation, documents the scale and sophistication of early industrial transport infrastructure in Britain.
Merthyr Tramroad: Pont y Gwaith section and associated bridges is a scheduled monument protected by Cadw under reference GM359. View the official record →
Merthyr Tramroad: Pont y Gwaith section and associated bridges is a post-medieval and modern tramroad in Wales, protected by Cadw as scheduled monument GM359. It is designated a Scheduled Ancient Monument by Cadw under reference GM359.
Merthyr Tramroad: Pont y Gwaith section and associated bridges dates from the post medieval/modern period, and is classified as a tramroad. It is one of over 32,000 scheduled monuments protected across the UK.
Merthyr Tramroad: Pont y Gwaith section and associated bridges 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 GM359.
Several scheduled monuments lie within 10 km, including Garnedd Lwyd (6 km), Cross Ridge Dyke & Earthwork on Cefn Eglwysilan (6.2 km), Pontypridd Bridge (6.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Merthyr Tramroad: Pont y Gwaith section and associated bridges'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.
Merthyr Tramroad: Pont y Gwaith section and associated bridges stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.