Tower Bridge as its northern landfall is in Tower Hamlets. The bridge consists of two bridge towers tied together at the upper level by two horizontal walkways, designed to withstand the horizontal tension forces exerted by the suspended sections of the bridge on the landward sides of the towers. The vertical components of the forces in the suspended sections and the vertical reactions of the two walkways are carried by the two robust towers. The bascule pivots and operating machinery are housed in the base of each tower. Before its restoration in the 2010s, the bridge's colour scheme dated from 1977, when
Albert Bridge, London light and thus to reduce the risks of ships colliding with the fragile structure during the day. At night, a network of 4,000 low-voltage tungsten-halogen bulbs illuminated the bridge. In 1993 the innovative use of long-life low-energy lighting was commended by Mary Archer, at the time Chairwoman of the National Energy Foundation. Except for Tower Bridge, built in 1894, Albert Bridge is the only Thames road bridge in central London never to have been replaced. Intended as a temporary measure to be removed in 1978, the concrete central piers remain in place, and although in 1974 its lifespan was estimated