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The Jackknife (or Jack-knife) Bascule Bridge spanning the Kaministiquia River at Thunder Bay, Ontario, Canada, was built by the Canadian Pacific Railway between August 1910 and April 1913. The contractor for the abutments and piers was Alexander Charles Stewart (1867-1944). The bridge has two decks, the lower deck for trains and the upper deck for vehicular road traffic. In 2004 the connecting roadways and upper deck were dismantled, and the future of the bridge is in doubt.
