St. Lawrence River
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Roosevelt International Bridge (St. Lawrence County, New York)
Roadway added in 1933; removed in 1959 for building of St Lawrence SeawayLost Through truss bridge over St Lawrence River on New York Central RR and roadwayReplaced by a new bridge
Seaway International Bridge (North) (St. Lawrence County, New York)
Built 1962; Demolished & replaced with UCEB in 2014Lost arched continuous warren through truss bridge over St. Lawrence River North Channel on International Bridge RoadReplaced by a new bridge
Seaway Skyway (St. Lawrence County, New York)
Built 1960Suspension bridge over St. Lawrence River at OgdensburgOpen to traffic
Thousand Islands Bridge (Jefferson County, New York)
Built 1938; rehabilitated 1986Suspension bridge over St. Lawrence River on I-81Open to traffic