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
Hawker Hunter Tower Bridge incident Hawker Hunter Tower Bridge incident The Hawker Hunter Tower Bridge incident occurred on 5 April 1968 when Royal Air Force (RAF) Hawker Hunter pilot Alan Pollock performed unauthorised low flying over several London landmarks and then flew through the span of Tower Bridge on the Thames. His actions were to mark the 50th anniversary of the founding of the RAF and as a demonstration against the Ministry of Defence (Air) for not recognising it. Upon landing he was arrested and later invalided out of the RAF on medical grounds which avoided a court martial. In the 1960s, the British defence