The Millennium Bridge was designed by Arup Group, Foster and Partners, and Sir Anthony Caro via participation in a bridge-building competition two years prior to construction began. The bridge is 325 metres long (1066 feet), 4 metres wide (13 feet) and designed to hold up to 5000 people at once. Given ‘Wobbly Bridge’s’ history, however, it is probably for the best not to test their claims. Interestingly, it was the first Thames bridge to be built in London in over 100 years. It cost £18.2 million to build, £2.2 million over budget.