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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Portland and Southwestern Railroad Tunnel ： ウィキペディア英語版 Portland and Southwestern Railroad Tunnel The Portland and Southwestern Railroad Tunnel, also known as the Nehalem Divide Railroad Tunnel, is an abandoned railroad tunnel near Scappoose, Oregon, United States, that is listed on the National Register of Historic Places. The tunnel was driven by the Portland and Southwestern Railroad, whose chief business was logging. Unusually for a logging railroad, the Portland and Southwestern built tunnels. In order to reach the far side of the Nehalem divide in the Northern Oregon Coast Range, the railroad undertook a tunnel. Some work was started in 1910, but most work began in 1918 and was completed in 1919. Since the tunnel was not through solid rock, the tunnel was lined with timber. The tunnel was used until 1945, when it was replaced by a truck road over the divide. While portions of the tunnel roof have collapsed, the tunnel is still open from end to end. The west portal is located at ; the east portal is at .〔 (【引用サイトリンク】 brian894x4 topo map plot ) 〕 ==See also== * List of bridges on the National Register of Historic Places in Oregon 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「Portland and Southwestern Railroad Tunnel」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.