- This article is about the village between Edwardsville and Merthyr Vale. For Pontygwaith in the Rhondda Valley see Pontygwaith, Rhondda.
On 21 February 1804 Richard Trevithick ran the first ever steam locomotive along tracks, now known as the Merthyr Tramroad, carrying both iron ore and passengers, from Penydarren near Merthyr Tydfil, via Pontygwaith, south to Abercynon.
There is little of the original village remaining today, which was inhabited and existed until approx 1977 as a terrace of ten houses and a farm. The site of the original village is accessible from the Taff Trail National cycle route 8. This leads down a heavily tree lined slope to the area that was the original village site.
The bridge over the River Taff at Pontygwait is a Grade II listed structure. and was featured in the Beauty and the Beast episode of the BBC's Merlin, where a girl has a picnic with a troll beneath the bridge.
Pontygwaith today lacks many dwellings, but one notable exception is Pontygwaith Farm, located on the hill near the bridge, which offers tea room facilities. The gardens have occasionally been opened, for charity days, by the owners.
The National Cycle Route 477 Taith Trevithick Trail heads up the east side of the valley from Pontygwaith to Trevithick's Tunnel - just south of Merthyr Tydfil, old stone sleepers can still be seen all around these trails on the east side of the valley where the famous tramroad ran. Cycle route 8 (the Taff Trail) also passes through the village. 
- "Engineering Timelines - Merthyr Tramroad and Penydarren rail locomotive". www.engineering-timelines.com. Retrieved 2017-09-06.
- Pontygwaith Overbridge, Penydarren Tramroad, Treharris, British Listed Buildings. Retrieved 2013-10-13
- Pontygwaith (The Works Bridge), Merlin Locations. Retrieved 2013-10-13.
- Dunn, Michael C. (2012), Walking in the South Wales Valleys, Cicerone, p. 82, ISBN 978-1-85284-664-0
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