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 to replace the bridge with a new construction. New London Bridge was opened in 1831 and survived until it was replaced in 1972. It was then transported and reconstructed in Lake Havasu City, Arizona. Several attempts have been made to identify the 'fair lady', 'lady gay', or lady 'lee/lea' of the rhyme. They include: Since the late 19th century the rhyme has been seen as one of the most popular and well known in the English-speaking world. It has also been referenced in both literature and popular culture. London Bridge Is Falling Down "London Bridge Is Falling Down" (also known