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The bridge catastrophically fell short during the night heavy traffic on 1 August 2007, breaking down to the river and shores underneath. Authorities revealed problem regarding lots of other bridges in the United States sharing the exact same layout and also questioned regarding why such a problem would not have been uncovered mini piling contractors in blackburn in over 40 years of assessments. The Dee bridge after its collapseThe Dee bridge was designed by Robert Stephenson, making use of actors iron girders strengthened with wrought iron struts. On 24 May 1847, it broke down as a train overlooked it, eliminating five people.