The Angers bridge was not the first suspension bridge to collapse. Previous failures included Dryburgh Abbey Bridge in 1818, The Royal Suspension Chain Pier in Brighton in 1836, and damage caused by winds to the Menai Suspension Bridge in 1825, 1836 and 1839. Subsequent spectacular suspension bridge collapses caused by wind include the failure of the Tacoma Narrows Bridge in 1940. However, the Angers bridge failure caused by far the greatest number of casualties.
As a result of the bridge's collapse, marchers were advised to break step when crossing bridges, a reiteration of much earlier advice given to Roman soldiers, and to the UK Military after the collapse of the Broughton Suspension Bridge in 1831. Ironically, crowds of people that don't intend to march often start walking in step to match the swaying of the bridge and maintain their balance. The problem is caused by transfer of momentum from the pedestrians to the bridge structure, causing resonance. The same problem occurred in 2000 at the recently completed Millennium Bridge (London), when over 600 people walked across the bridge, causing lateral vibrations. The problem was corrected by installing large dampers to absorb the vibrations and change the natural frequency of the structure.
In addition to dynamic effects, the cable anchorages at Angers were found to be highly vulnerable, with the wire strands having separated from their cement surrounds. This allowed water to penetrate, leading to corrosion of the wires.