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The Bang Na Expressway (full name: Bang Na - Bang Phli - Bang Pakong Expressway), officially Burapha Withi Expressway ((タイ語:ทางพิเศษบูรพาวิถี)), is a 55 km long six-lane elevated highway in Thailand. It is a toll road and runs above National Highway route 34, (Bang Na–Bang Pakong Highway) owned by the Expressway Authority of Thailand (EXAT). The highway is elevated onto a viaduct that has an average span length of 42 meters. It is a 27-meter wide box girder bridge and was completed in January 2000. It took 1,800,000 cubic meters of concrete to build the bridge. The structure was built using a design-build contracting method. The columns and superstructure were designed by Jean M. Muller (U.S.) and the alignment and foundations were designed by Asian Engineering Consultants (Thailand). The owner's engineer was Louis Berger Group (U.S.) and the project was built by a joint venture of Bilfinger + Berger (Germany) and Ch. Karnchang (Thailand).〔()〕 There are two toll plazas on the elevated structure where the structure must widen to accommodate twelve lanes. It is one of the longest bridges in the world (until 2010 it was the longest) but it is excluded from some lists since it does not cross a body of water for most of its length. The largest body of water that it crosses is the Bang Pakong River. == See also == * List of bridges by length * List of bridge megaprojects * Expressway 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「Bang Na Expressway」の詳細全文を読む スポンサード リンク
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