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Concrete Slab Dam

Span length listed is total length of bridge
Year Name Location Span (ft)
1927 Conowingo Dam Maryland, USA 4 611
1952 SR-4, Roanoke R. Mecklenburg Co., VA, USA 2 785
1936 Hoover Dam Lake Mead, NV, USA 1 324

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Last updated: 2005-01-17