S bridge
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An S bridge is a double-curved bridge, shaped roughly like a shallow letter S, used in early 19th century road construction in the United States. They were generally used for crossing small, curving streams with uneven banks.
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An S bridge is a double-curved bridge, shaped roughly like a shallow letter S, used in early 19th century road construction in the United States. They were generally used for crossing small, curving streams with uneven banks.
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