Thelwall Viaduct, UK Flint & Neill Limited was appointed by the Highways Agency to carry out the independent review of the emergency replacement of the bearings for the 1300m long Thelwall Old Viaduct in Manchester, England. The viaduct carries the Northbound carriageway of the M6 across the Manchester Ship Canal and the River Mersey. In mid 2002 a number of roller bearings were found to have cracks in both the rollers and the bea

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