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The Neuquén-Cipolletti bridges are a series of four bridges that connect the cities of Neuquén and Cipolletti by spanning the Neuquén River, in Argentina. Three parallel ones, two road bridges and a railway bridge, were built on a former herd wrangling path. The fourth one was built upstream. By 1899 the expansion of the Buenos Aires Great Southern Railway reached the station that later would become Cipolletti. To continue to the Neuquén Territory, a steel railway bridge was constructed in 1899–1902 to cross the Neuquén River. After the railroad connected Neuquén Station on the Confluencia settlement, the capital of the Territory was moved to the area, and the city of Neuquén founded in 1904. Vehicular and pedestrian crossings of the river were made using boats and canoes at that time. By the 1930s, the service was overwhelmed by the growing population. The construction of a road bridge started in 1935, and the bridge opened in 1937. A second road bridge opened in 1997 to alleviate traffic congestion, while the third one is scheduled to open in 2015. ==Background== In 1896, due to territorial disputes with Chile, the Argentinian Government commissioned the British-owned company Buenos Aires Great Southern Railway ((スペイン語:Ferrocarril Sud)) to expand the existing railroad tracks from the city of Bahía Blanca, in the Buenos Aires Province, to the Neuquén National Territory. The expansion of the railroad was aimed at facilitating the quick transport of troops and supplies to the Chilean border in case of war. By that time, the capital of the Neuquén National Territory was located in the city of Chos Malal. The journey between the city of Buenos Aires and the capital of the Territory lasted fifteen days, while the mail service arrived once a month. On August 31, 1899, the expansion of the railroad reached the station Km. 1,190 (later renamed Limay Station). The contract for the expansion, signed on March 16, 1896, established that the corporation F.C. Sud was to build a railroad bridge over the Neuquén River to continue the expansion of the tracks to the Neuquén National Territory. Across the river, the isolated Confluencia settlement was formed by Spanish and Italian immigrants. Living in a sparse group of houses, the settlers' economy was sustained by the agriculture, while they depended on boat and canoe services to cross the river and remain communicated with the rest of the country. 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「Neuquén-Cipolletti bridges」の詳細全文を読む スポンサード リンク
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