Llanbradach, United Kingdom

The line extension was short-lived: it closed on 4 August 1926 and was decommissioned. It was removed to be sold for scrap by 1938. The Penrhos and Penyrheol viaducts within the extension were removed by 1937. The brick support piers of the Llanbradach viaduct were demolished and their remains left in heaps across the valley for decades; eventually they were removed as part of the modernisation of highways in the area. All that remains of the viaduct is a single brick arch towards the western end of where it ran. A short part of the trackbed can still be seen near Energlyn. The rest of the trackbed was incorporated into the A468 Caerphilly bypass road, south-west of Caerphilly. The line carried on southwards from Penrhos through Ty Rhiw, and on to the Walnut Tree Viaduct, of similar construction, which itself was largely dismantled in 1969. There were no formal passenger stations along this stretch but it did see some summer passenger excursion traffic to Barry Island as late as 1961.

All that remains of the Walnut Tree viaduct are an abutment, an angled pillar and the Taff Bank pier. The last of these was used in 1977 for the display of messages of goodwill for the Silver Jubilee of Queen Elizabeth. Most of the remaining trackbed north of Walnut Tree Taff's Well is now incorporated into the Taff Trail. The remaining Cadoxton Junction–Trehafod Junction (latterly Trefforest Junction) route, former Barry Railway's main line, also closed as a result of the Tynycaeau incident in 1963.

The original Llanbradach Workmen's Institute, a miners' institute built in the 1900s, was constructed of timber and corrugated iron, and previously fulfilled the functions of village hall, school and a place for religious gatherings. A committee was set up in 1910 to organise the replacement of the old structure with a modern stone building. The new building was opened in 1913, and among the amenities available to the workmen were a snooker room, a small cinema, and a reading room and library.

The hall remained in use until at least the early 1980s (albeit in a declining state). It housed the village library, a billiards room, possibly a boxing gym and theatrical productions by the local Coed-Y-Brain school. It was demolished at some point around the turn of the 21st century and the site is now a car park.