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出典:『Wikipedia』 (2011/01/28 22:12 UTC 版)

英語による解説

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Echo Bridge was built to carry an aqueduct over the Charles River in Newton Upper Falls, Massachusetts. The aqueduct carried water from the Sudbury River to Boston. Construction of Echo Bridge began in 1875 and was completed in 1877 by Boston Water Works (BWW). At the time, it was the second longest masonry arch in the country. The bridge was named an American Water Landmark in 1981. On April 9, 1980, it was added to the National Register of Historic Places.