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The bridge catastrophically failed during the night rush hour on 1 August 2007, collapsing to the river and also riverbanks underneath. Officials expressed concern concerning numerous various other bridges in the United States sharing the very same design as well as questioned regarding why such a problem would certainly not have been uncovered in over 40 years of assessments. piling company in blackburn The Dee bridge after its collapseThe Dee bridge was made by Robert Stephenson, using cast iron girders strengthened with wrought iron struts. On 24 May 1847, it broke down as a train overlooked it, eliminating 5 individuals.