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 piece was meticulously numbered. The blocks were then shipped via the Panama Canal to California and trucked from Long Beach to Arizona. The bridge was reconstructed by Sundt Construction at Lake Havasu City, Arizona, and re-dedicated on 10 October 1971. The reconstruction of Rennie's London Bridge spans the Bridgewater Channel canal that leads from the Uptown area of Lake Havasu City and follows McCulloch Boulevard onto an island that has yet to be named. The London Bridge that was rebuilt at Lake Havasu City consists of a frame with stones from Rennie's London Bridge used as cladding. The cladding stones