Strand Underpass the former Aldwych tramway station: because of the greater width requirement, 27 trees and some pavement were removed for it to be constructed. The tunnel is used by the 521 bus route northbound. In 2012, the direction of traffic in the tunnel was temporarily reversed, so that it was in use by southbound traffic. This was to facilitate easier traffic flow during the 2012 Summer Olympics. Strand Underpass The Strand Underpass is a one-way vehicle tunnel in central London connecting Waterloo Bridge to Kingsway near Holborn. Opened in 1964, it was built within the former Kingsway tramway subway, which closed
London Bridge Area Signalling Centre London Bridge Area Signalling Centre London Bridge Area Signalling Centre (ASC) is a signalling centre on the Kent Route of Network Rail Ltd. on the railway in Great Britain, principally covering the line from London (Charing Cross, Cannon Street and London Bridge) to Kent and Sussex route areas of Network Rail Ltd. The signalling centre opened in 1974. During 1974/75, the first section of the control panel in London Bridge ASC was commissioned, gradually replacing redundant signalling locations in the area and principally replacing the old 1923-built London Bridge signal box. Railway track layouts were altered to separate Cannon Street,