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,
Operation London Bridge Operation London Bridge Operation London Bridge has been a codename that referred to the plan for what would happen in the days after the death of Queen Elizabeth II. The plan was originally devised in the 1960s and is updated several times each year. It involves planning from government departments, the Church of England, Metropolitan Police Service, British Armed Forces, media and Royal Parks of London. Some key decisions relating to the plan were made by the Queen herself, although some can only be made by her successor (the current heir apparent is her son, Charles, Prince of Wales), after