Bascule Lift Bridge
Originally built in 1922, the Fort Street fixed-trunnion bascule bridge in Detroit, Michigan allows large cargo ships to travel the Rouge River while transporting material to the nearby Ford Motor plant. The double-leaf bascule design utilized below-deck counterweights to raise and lower the two roadway leaf/sections.
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The 17th Street double leaf bascule lift bridge in Two Rivers, Wisconsin has been in operation since 1949, allowing the local commercial fishing fleet access to Lake Michigan via the East Twin River.
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