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}} The Miles Glacier Bridge, also known as the Million Dollar Bridge, was built in the early 1900s, across the Copper River fifty miles from Cordova in what is now the U.S. state of Alaska. It is a multiple-span Pennsylvania truss bridge which completed a railroad line for the Copper River and Northwestern Railway, built by J. P. Morgan and the Guggenheim family to haul copper from the old mining town of Kennicott, now located within the Wrangell–St. Elias National Park and Preserve, to the port of Cordova. It earned its nickname because of its $1.4 million cost, well recouped by the about $200 million worth of copper ore which was shipped as a result of its construction. Current access to the bridge is limited to jet boat travel up the Copper River or boat travel downriver from Chitina due to the erosion factors affecting the 339 bridge on the Copper River Highway.〔http://www.thecordovatimes.com/article/1330day-trip-to-childs-glacier-and-million-dollar〕 == History == The Copper River and Northwestern Railway and associated bridges were built between 1906 and 1911 by Michael James Heney. This bridge was the most significant of the group. However, its use as a railroad bridge ended in 1938 when the Copper River and Northwestern Railway shut down. Work to convert the old rail bed to a road began in the 1950s, and was completed in 1958. The overall work to complete a highway from Cordova to Chitina was halted when the bridge, and much of the highway under construction, was damaged by the 1964 Alaska earthquake. One of the bridge spans slipped off its foundation after the earthquake. The bridge was placed on the National Register of Historic Places in 2000. 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「Miles Glacier Bridge」の詳細全文を読む スポンサード リンク
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