Bridges are made to save the duration of time between two cities. To preserve traffic, they are made and for government bridges are very useful. For import and export it is useful. There are so many bridges in this world but the longest of its kind is Brooklyn Bridge.
London Bridge refers to few historical bridges in the central London,England. These bridges have covered the distance from the River Thames. The current passage which was before made of concrete and iron supports was opened for the general traffic in 1973. Later it was out dated and has to be replaced with the new design before that it was made of timber wood bridges in fact the series of bridges.