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
Operation London Bridge Operation London Bridge Operation London Bridge has been a codename that referred to the plan for what would happen in the days after the death of Queen Elizabeth II. The plan was originally devised in the 1960s and is updated several times each year. It involves planning from government departments, the Church of England, Metropolitan Police Service, British Armed Forces, media and Royal Parks of London. Some key decisions relating to the plan were made by the Queen herself, although some can only be made by her successor (the current heir apparent is her son, Charles, Prince of Wales), after