Case Study High Bridge medieval masonry arch masonry arch structure linear and nonlinear analysis load capacity of structure proved She?eld City Council’s Design and Property (Structures Division) used LUSAS Bridge to undertake an assessment (strength) check of High Bridge, a 13th century quadripartite arch bridge on behalf of Lincolnshire County Council, the bridge’s owner. High Bridge, which carries Lincoln’s main pedestrian thoroughfare, had been structurally assessed twice before with con?icting outcomes. The LUSAS analysis provided an independent third assessment and proved the structure was safe for the imposed loading.History The High Bridge on Lincoln High Street dates from 16th century and carries the road, once one of the two main routes through the centre of Lincoln, over the Ri

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