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Riverdale Road Bridge is a covered bridge spanning the Grand River in Morgan Township, Ashtabula County, Ohio, United States. The bridge, one of currently 16 drivable bridges in Ashtabula county, is a single span Town truss design. During its renovation in 1981, the floor was rebuilt and glue-laminated wood girders were added. Previously, center steel bracing had been replaced under the bridge in 1945. In 1987, a new concrete abutment for additional support was added after the road at the east end of the bridge washed out.〔http://www.coveredbridgefestival.org/bridges.htm Ashtabula County Ohio Covered Bridge Festival〕 The bridge’s WGCB number is 35-04-22,〔http://www.dalejtravis.com/bridge/ohio/htm/3500422.htm Ohio Covered Bridges List, 35-04-22〕 and it is located approximately 1.1 mi (1.7 km) north-northwest of Rock Creek. ==History== *1874 – Bridge constructed〔 *1945 – Center steel bracing replaced〔 *1981 – Bridge renovated〔 *1987 – Concrete abutment added at west end after road washed out〔 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「Riverdale Road Covered Bridge」の詳細全文を読む スポンサード リンク
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