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,
London Bridge (New South Wales) constructed Googong Dam instead. London Bridge is located within the boundaries of the Burra Creek Nature Reserve. London Bridge (New South Wales) London Bridge is a limestone karst in the Australian state of New South Wales near Canberra which consists of a limestone arch hollowed out by Burra Creek, a tributary of the Queanbeyan River of the Molonglo River. It is now isolated as a meander cutoff. It was first discovered by the European explorers Captain Mark Currie, Brigadier Major John Ovens, Joseph Wild and accompanied by two nameless aboriginal guides in 1822. It was in danger of being flooded