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
City of London east (downstream), cross the River Thames: Blackfriars Bridge, Blackfriars Railway Bridge, Millennium Bridge (footbridge), Southwark Bridge, Cannon Street Railway Bridge and London Bridge; Tower Bridge is not in the City. The City, like most of central London, is well served by buses, including night buses. Two bus stations are in the City, at Aldgate on the eastern boundary with Tower Hamlets, and at Liverpool Street by the railway station. There are approximately 28 Barclays Cycle Hire docking stations in the City. A number of existing and proposed cycle routes criss-cross the City, as part of the London Cycle Network. One