Pont Reilffordd Abermaw

Barmouth Bridge (Welsh: Pont Abermaw), or Barmouth Viaduct (Welsh: Traphont Abermaw), is a Grade II* listed single-track wooden railway viaduct across the estuary of the River Mawddach near Barmouth, Wales. It is 900 yards (820 m) long and carries the Cambrian Line. It is the longest timber viaduct in Wales and one of the oldest in regular use in Britain. Barmouth Bridge was designed by and constructed for the Aberystwith and Welsh Coast Railway on its line between Aberystwyth and Pwllheli. Work was authorised in 1861 and commenced in 1864. On 10 October 1867, the completed bridge was officially opened. Following the discovery of severe corrosion on underwater sections of ironwork, an intensive restoration programme was performed between December 1899 and late 1902. By 1980, the viaduct was under attack by marine woodworm, which led to concerns that it would have to be closed and demolished. Because of its value to tourism, it was repaired between 1985 and 1986, a closure of six months; a weight restriction and ban on locomotive-hauled trains were also introduced. These restrictions have been relaxed since 2005. The viaduct, between Morfa Mawddach and Barmouth stations in Gwynedd, is used by rail, cyclists, motorcyclists and pedestrians and is part of the National Cycle Route 8. There is no provision for road traffic. Tolls were collected for foot and cycle traffic up to 2013, but this has been voluntary since 2017. To allow the passage of tall ships, the bridge originally incorporated a drawbridge, which was replaced by a swing bridge between 1899 and 1902. When the viaduct was refurbished again between 2020 and 2023, the swing-bridge mechanisms were not restored.