Bridge four-lane highway on the upper level and a pair of railway tracks at the lower level. Tower Bridge in London is different example of a double-decked bridge, with the central section consisting of a low level bascule span and a high level footbridge. A viaduct is made up of multiple bridges connected into one longer structure. The longest and some of the highest bridges are viaducts, such as the Lake Pontchartrain Causeway and Millau Viaduct. A three-way bridge has three separate spans which meet near the center of the bridge. The bridge appears as a "T" or "Y" when viewed
London Bridge Is Falling Down children in the foundations of the bridge was first advanced by Alice Bertha Gomme (later Lady Gomme) in "The Traditional Games of England, Scotland and Ireland" (1894–1898) and perpetuated by the usually sceptical Iona and Peter Opie. This was based around the idea that a bridge would collapse unless the body of a human sacrifice was buried in its foundations and that the watchman is actually a human sacrifice, who will then watch over the bridge. However, there is no archaeological evidence for any human remains in the foundations of London Bridge. Until the mid-eighteenth century the Old London Bridge