A precast bridge in Canada

Two cranes were required to swing this 130-ton precast concrete bridge slab into its place on the 18th St. grade separation project in Toronto. Ten of these slabs, each 80 ft. long, 3 ft. deep and 6½ ft. wide, were used in building the recently completed five-track bridge to carry the main line of the Canadian National Ry. Rails are attached to "chairs" held directly to the concrete

Charles P. Disney, bridge engineer for the CNR, who designed these precast sections, is shwon inspecting one of them. An article on CNR precast bridge practice appeared in ENR July 19, 1934, page 65.

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