Penllwyn Tramroad Bridge
near Brynawel and Wattsville, west of Risca, Gwent
This high level single arched masonry bridge was built in 1824 to carry the Penllwyn Tramroad over River Sirhowy to connect with the Monmouthshire Canal Co tramroad at Nine Mile Point. The brickwork was reinforced c.1870.[1]
Photos here, in the broader context of industry in the Southern Sirhowy Valley.