Canadian National passenger train entering the shared road-rail Quebec Bridge in Quebec, Canada. The bridge spans the lower Saint Lawrence River to the west of Quebec City and LÚvis, Quebec. It was completed in 1917 as part of Canada's National Transcontinental Railway Project following two decades of construction and two accidents that claimed the lives of 88 workers. The bridge measures 3289 feet in length with a central span of 1800 feet, still the longest cantilevered span in the world. Canadian National Railway has owned the bridge since 1993.