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The Virginia Avenue Tunnel is a railroad tunnel in Washington, D.C. owned by CSX Transportation. It is part of the CSX RF&P Subdivision and serves freight trains along the eastern seaboard routes, providing a bypass around Union Station. The single-track tunnel is located under Virginia Avenue SE, from 15th and M Streets SE to 2nd St. and Virginia Avenue SE. The eastern portal connects to the Anacostia Railroad Bridge and the CSX Capital Subdivision. At the western end the RF&P Sub runs to the Long Bridge into Virginia.〔U.S. Federal Railroad Administration, Washington, DC and Maryland Department of Transportation, Baltimore, MD (2011). ("Baltimore's Railroad Network: Analysis and Recommendations." ) January 2011. pp. 11-1, 11-2.〕 CSX is rebuilding the tunnel to replace its deteriorated structure and increase capacity. Construction began in 2015 and is expected to be completed around 2018. ==History== The tunnel was constructed in 1872 by the Baltimore and Potomac Railroad (B&P), later controlled by the Pennsylvania Railroad. It originally served the B&P station on the present-day site of the National Gallery of Art, on the National Mall at 6th & B Street NW (today's Constitution Avenue). The tunnel was built using the cut and cover method. It was constructed of ashlar stone for the sidewalls, and brick and stone for the arches. In 1904 the tunnel was extended to its present length due to a track relocation.〔 Initially the tunnel served both freight and passenger service until Union Station's opening in 1908, and since that time it has been freight-only.〔National Railway Historical Society, Washington, D.C. Chapter. ("Washington Railroad History Timeline" at #14. )〕 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「Virginia Avenue Tunnel」の詳細全文を読む スポンサード リンク
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