A … Travellers were used to carry heavy loads to specific jobs on the bridge. The failure of these chords was due to their defective design. They had pride in their work and on the day when their desire was to be achieved, fate intervened…. The Phoenix Bridge Company’s design called for a cantilever bridge of 150 feet in height above the high water mark. It was, and still is, the longest clear span cantilever bridge in the world, measuring 549 metres between its main pillars. A grave error was made in assuming the dead load for the calculations at too low a value … A few seconds later, the other ends pulled off their supports and the whole span came loose and disappeared into the river. However, at 5:37 p.m., Aug. 29, 1907, around the same time that the Phoenixville meeting was ending, the Quebec Bridge suddenly collapsed. At last, the world’s longest cantilever bridge was completed and the first train crossed it in October. On May 23, 1987, the Québec Bridge was designated a Historical Civil Engineering Landmark by the American Society of Civil Engineers to highlight the technical challenge of its construction at the beginning of the century. Most of these men, along with several other workers–about 55 in all–were working on the cantilever arm at the time of the collapse. After their meeting on the morning of the Aug. 29, 1907, Cooper telegraphed the contracting company in Phoenixville as follows: “Add no more load to the bridge till after due consideration of the facts. The bridge collapsed during construction on August 29, 1907, killing 75 workers. Home » Canada Corner » O Canada » A Bridge With Two Tragedies. “I thought I would never come to the surface again. Only eleven workers on the span survived. Quebec Bridge has a long story behind it, a bridge that was proposed first back in 1852 but it was not complete until 1919. On September 11, 1916, when the central span wa… Vautelet, with carrying out necessary changes to the bridge’s basic design. They have lost when victory seemed certain.”, Bridge worker Enoch McCann, who could not swim, was picked out of the chilly water by a rescue boat. A new bridge was designed. It was as if they had lost a great friend. The rail bridge was designed to link the two shores and provide easier transit for the 11 railroad companies in particular between the railways in Québec and the United States. The bridge was finally completed in 1917 and the Prince of Wales (later Edward VIII) officially opened it 22 August 1919. Quebec (1907 and 1916) A Bridge with Two Tragedies. The new design was again for a bridge with a single long cantilever span, but a much more massive one. He also modified specifications that would allow for higher This animation only illustrates the construction of the second bridge that started in 1911, 4 years after the collapse of the first bridge. In August, McLure telegraphed New York because splices between some of the lower chords in the south anchor arm were bent. CHANGES OF THE PLAN Before construction was to begin, Cooper lengthened the span from 1600 ft to 1800 ft. To meet the growing traffic between the shores, a third roadway was added in 1993. Ottawa’s Heron Road Bridge also collapsed during construction, on 10 August 1966. à The Collapse of September 11, 1916 ... Holtz, Neal. In 1916, when the great bridge was nearing completion, tragedy struck again. In April 1911, the board of engineers awarded a contract to the St. Lawrence Bridge Company of Montreal. “Women shrieked, men stood dumbfounded, while those directly interested in the building of the bridge could scarcely hold back the tears which welled in their eyes. The bridge was completed in 1917 and the Prince of Wales (later Edward VIII) officially opened it on 22 August 1919. The Quebec Bridge structure plunged over 150 feet taking with it the lives of 75 workers. McLure will be over at five o’clock.” Cooper believed that the same message would be forwarded from Phoenixville to Quebec City, but this never happened. Remarkably, Cooper, who claimed he was not in good health, worked out of his New York City office and did not make visits to the site during the erection of the superstructure. William Treggett Jr. was involved in the construction of the center span of the bridge. A few years later, on August 29, 1907, the south section of the bridge collapsed and killed 76 workers, including 33 Mohawk workers from the Kahnawake community. 1916: Second Quebec Bridge Collapse Engineering disaster Quebec City, Quebec Central Canada 1917–1966. As before, the design called for a cantilever-type bridge, but it differed from the previous one with the lower chords of the cantilever arms several times stronger. The Quebec Bridge is a riveted steel truss structure and is 987m long, 29m wide, and 104m high. The giant arms and the steel bands which held the span shook considerably.”. One important innovation that added strength to the bridge was the K-truss design. In 1907 the incomplete structure collapsed into the river with a loss of 75 lives. on the wiki sept. 11th page it refers to 1916 - The Quebec Bridge collapses for a second time, killing 11 men. The investigation by the board of engineers determined that the span did not buckle as Larocque and others claimed. Bridging The St Lawrence Wonders Of World Ering. In 1929, a roadway was added to the two rail lines to accommodate the needs of residents in the Québec city area, and it operated as a toll bridge for cars from 1929 to 1942. The newspaper articles detail the 1916 construction accident on the second Quebec bridge; one 1917 article about the bridge; and one 1986 article about the 1907 collapse of the first bridge. The bridge was rebuilt, and on September 11, 1916, the bridge collapsed again killing 13 men. The collapse of the Quebec Bridge resulted from the failure of the lower chords in the anchor arm near the main pier. Nothing came over on me.” Amazingly, when Lajeunesse landed he was not even dislodged from the girder he was standing on. The businessmen formed the Quebec Bridge Company and obtained a charter of incorporation to erect a bridge over the river, a few miles upstream from the historic city near the mouth of the Chaudiere River. This bridge would need to be long and high in order to accommodate ocean ships bound for Montreal. On October 2, 1900, the Prime Minister of Canada, Sir Wilfrid Laurier, placed the cornerstone of the Québec Bridge. From the War of 1812 to modern armed forces missions around the world, Legion Magazine offers a blend of stories, photographs, graphics, maps and posters on Canadian military history and heritage, veterans’ issues and the Canadian Armed Forces. 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