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Naviduct
A naviduct is a special class of navigable aqueduct, in which the waterway also includes a lock. One example of a naviduct has been built at Enkhuizen on the Houtribdijk in the Netherlands on the instructions of the Rijkswaterstaat. This cost over €55 million and was completed in 2003. It is big enough to simultaneously transfer two large Rhine river-barges from the Markermeer to the IJsselmeer or vice versa. The structure was chosen because a busy waterway crosses a dike carrying a busy road, but the space available for separate aqueduct and lock facilities was restricted. ==Definition== The term is derived from the words lock (for navigation) and aqueduct, which are in turn partly derived from the Latin words ''navis'' meaning ship and ''ducere'' meaning to lead or conduct.〔(【引用サイトリンク】url=http://www.zwarts.jansma.nl/page/327/en?lang=en )〕 It can also be thought of as a lock system with an underpass under the lock for road traffic. It is used extensively in the Netherlands when referring to the works near Enkhuizen, North Holland, and is used without alteration in English language texts.
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「Naviduct」の詳細全文を読む
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