Barmouth Railway Bridge

"Pont Reilffordd Abermaw" or "Barmouth Bridge" is an old railway bridge east of Barmouth, Wales. It is single-track wooden railway viaduct across the estuary of the Afon Mawddach. It is 820 metres long and carries the Cambrian Line. It is the longest timber viaduct in Wales and one of the oldest in regular use in Britain. 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.
To allow the passage of tall ships, the bridge incorporated a drawbridge, which was replaced between 1899 and 1902 by a swing bridge, which is no longer operational due to a lack of use.