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
Tower Bridge (California) an agreement reached on March 8, 1934. Under the terms of the agreement, Sacramento Northern Railway relinquished its rights to the 1911 M Street Bridge in return for the rights to rail traffic over the new bridge until March 21, 1960, which was the original expiration date of its franchise to operate rail traffic over the 1911 bridge. Construction commenced on July 20, 1934. Road traffic was diverted to the I Street Bridge, and rail traffic was diverted to a temporary timber-and-steel "shoofly" bridge approximately of the existing M Street Bridge. Tower Bridge was initially designed with a wide roadway