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Barmouth Bridge (Welsh: ''Pont Abermaw''), also known as Barmouth Viaduct, is a single-track largely wooden railway viaduct that crosses the River Mawddach estuary on the coast of Cardigan Bay, Wales. It sits between Morfa Mawddach and Barmouth in Gwynedd and caters for rail, foot and cycle traffic. The bridge opened in 1867, and originally included a drawbridge section at its north end for tall ships to pass, though this was later replaced by the current swing bridge section. In 1980, woodworm threatened the safety of the bridge, which needed major repairs to avoid closure. Tolls were collected for foot and cycle traffic until 2013; as of 2015 the future for non-rail traffic is uncertain. The bridge is a Grade II * listed structure, and has one of the longest timber viaducts still in regular use in Britain. ==Location and structure== The bridge crosses the estuary of the River Mawddach from Morfa Mawddach near Arthog northwards to the edge of Barmouth. The line is operated by Arriva Trains Wales, with connecting services south to Aberystwyth and east to Welshpool and Shrewsbury.〔(【引用サイトリンク】title=Cambrian Line )〕 The section containing the bridge is on the Cambrian Coast railway between Machynlleth and Pwllheli.〔(【引用サイトリンク】title=Cambrian Coast Railway Line )〕 The bridge is a Grade II * listed structure about long〔 and contains 113 wooded trestles supported by a series of cast iron piers. It is one of the longest timber viaducts still standing in Britain.〔 A footbridge is incorporated on the eastern side and pedestrians, cyclists and motorcycles can cross the estuary by the side of the track.〔 Since 1996, this has formed part of the National Cycle Route that links North and South Wales. The footbridge is owned by Network Rail but an agreement is in place with Gwynedd County Council, who pay for 10% of the annual maintenance in exchange for a licence to use the bridge. Most of the bridge is built on a gravel bed covered by shifting sand. The north end by the swing bridge section is next to the rock of Figle Fawr at the base of Cadair Idris, and the river channel here can flow up to 9 knots (16.7 km/h). The first two spans here are built directly onto the rock.〔 There is no nearby crossing for road traffic. The nearest spanning the Afon Mawddach is a toll bridge at Penmaenpool about further upstream and permits vehicles up to 2.5 tonnes. Heavier vehicles must use the first public road bridge, which is at Dolgellau about from Barmouth. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Barmouth Bridge」の詳細全文を読む スポンサード リンク
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