Millennium Bridge, London people walking caused small sideways oscillations in the bridge, which in turn caused people on the bridge to sway in step, increasing the amplitude of the bridge oscillations and continually reinforcing the effect. On the day of opening, the bridge was crossed by 90,000 people, with up to 2,000 on the bridge at any one time. Resonant vibrational modes due to vertical loads (such as trains, traffic, pedestrians) and wind loads are well understood in bridge design. In the case of the Millennium Bridge, because the lateral motion caused the pedestrians loading the bridge to directly participate with the bridge,
Kingston Bridge, London of the Hogsmill River, a minor tributary of the Thames. The Thames Path crosses the river here and the bridge is the end point for the Thames Down Link long distance footpath from Box Hill station. Until Putney Bridge was opened in 1729, Kingston Bridge was the only crossing of the river between London Bridge and Staines Bridge. According to 16th century antiquarian John Leland, the bridge existed in the centuries when Anglo-Saxon England existed (after Roman Britain and before 1066). He wrote "And yn the old tyme the commune saying ys that the bridge where the commun passage was