Several historical
bridges named
London Bridge have spanned the
River Thames between the
City of London and
Southwark, in
central London. The current crossing, which opened to traffic in 1974, is a
box girder bridge built from concrete and steel. This replaced a 19th-century stone-arched bridge, which in turn superseded a 600-year-old medieval structure. This was preceded by a succession of timber bridges, the first built by the
Roman founders of London.