The Treffry Viaduct is not a Roman site. It is a 19th-century granite viaduct and aqueduct built between 1839 and 1842 by Joseph Treffry to carry both a mineral tramway and a leat across the Luxulyan Valley in Cornwall, serving the industrial infrastructure of the Par and Newquay mining and china-clay districts.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
Its significance is industrial and Victorian rather than Roman: it was the first major engineering structure of its kind in Cornwall and remains a centrepiece of the Cornish Mining World Heritage Site. There is no evidence of Roman activity at this location, and indeed Roman infrastructure in Cornwall is exceptionally sparse, limited to a handful of forts (Nanstallon, Restormel, Calstock) and no known aqueducts.
The structure itself is extensively documented as standing industrial heritage — 200 m long, with ten arches up to 27 m high — and the associated leat, tramway trackbed, and waterwheel pits survive. No Roman material has been recovered from the site or its immediate environs.
The Treffry Viaduct is not a Roman site. It is recorded in the Pleiades gazetteer of ancient places as a aqueduct site from the Roman period in Britain.
Combined viaduct and aqueduct called Treffry Viaduct is classified as a Roman aqueduct — a infrastructure site in the Pleiades ancient world gazetteer. Roman Britain's archaeology encompasses thousands of sites ranging from legionary fortresses and marching camps to villas, temples and towns.
Several Roman sites lie within a short distance, including Restormel (6 km), Sticker Camp later Prehistoric-Roman round (9.8 km), Nanstallon (10.1 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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Research the area around Combined viaduct and aqueduct called Treffry Viaduct