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}} thumb The Casselman Bridge (variously known as Casselmans Bridge, Castleman's Bridge, and Little Crossings Bridge) is an historic transportation structure located east of Grantsville in Garrett County, Maryland. The bridge was built to carry the National Road across the Casselman River. It is the centerpiece of Casselman River Bridge State Park.〔 Historic markers posted at each end read: The bridge was declared a National Historic Landmark in 1964.〔 ==History== The stone arch bridge spans with a arch. The bridge was constructed in 1813-1814 to aid in the westward movement through the frontier wilderness west of Cumberland, Maryland. A small portion of the original National Road still exists at the approaches to the bridge.〔 The first wheeled traffic crossed the bridge in 1815. It was strengthened for motorized traffic in 1911 and continued in service as a highway until 1933 when a modern steel span was built nearby to serve what is now US Route 40 Alternate.〔 In the 1940s and early 1950s efforts were made to preserve the bridge when sections started to crumble and fall apart. The bridge was closed to vehicles in 1953〔 and partially restored by the state in the mid 1950s.〔 Additional maintenance occurred in 1979, 1996, and 2002.〔 More repairs were made in 2012.〔 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「Casselman Bridge」の詳細全文を読む スポンサード リンク
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