Prior to the completion of the Canso Causeway in 1955, Cape Breton Island and mainland Nova Scotia were completely separated by a narrow body of water called the Strait of Canso.  Cape Breton was dependant on a system of railway and highway ferries for shipping and communication.  The mile long eighty foot wide man-made causeway is known as the deepest in the world and has taken care of the traffic and communication problems along with having a tremendous impact on the economy of the strait region.

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