Iron Tram Bridge, Robertson - Credit: Wikimedia Commons
The Iron Tram Bridge, Robertstown is an early example of a "railway" bridge. It crosses the River Cynon between Trecynon and Robertstown. It carried the Llwydcoed Tramroad ( gauge) which ran from Hirwaun to the canal head at Cwmbach, south east of Aberdare. It was built by the Aberdare Canal & Navigation Company in 1811, and probably designed by George Overton. Read more on Wikipedia
Source: en.wikipedia.org