Structural failures during the 19th century due to design failures and failing of human intelligence and in 19th centaury are discussed. The pyramid system in which a great mass of debris was gutted at the base of foundation combined with fact that its angle changes from 54° to a 43° about half way up was followed. One bridge collapsed in every 30 years between the middle of the 19th century. A footbridge is oldest kind of bridges but it explored in new technology at the end of the millennium, under the crowd traffic the bridges have been designed to handle repetitive, up-and-down lock-step or marching motion in the frequency range. A pedestrian bridge across the Thames river was designed in this way however this was closed in just three days. The side-to-side movements of the bridge were causing people to grasp the side rails, and it was feared that someone might get hurt. It was reopened retrofitted with dampers and other devices designed to mitigate the effects of the pedestrians.