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,
Millennium Bridge, London of limited access, for almost two years while modifications were made to eliminate the motion. It reopened in February 2002. The southern end of the bridge is near the Globe Theatre, the Bankside Gallery, and Tate Modern, while the northern end of the bridge is next to the City of London School below St Paul's Cathedral. The bridge alignment is such that a clear view (i.e. a "terminating vista") of St Paul's south façade is presented from across the river, framed by the bridge supports. The design of the bridge was the subject of a competition organised in 1996 by