Strand Underpass 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 in the 1950s. The underpass is built within part of the former Kingsway tramway subway, which was wide and allowed bi-directional flow because of the fixed rails and relatively narrow width of the trams. The new underpass was built by John Mowlem & Co and opened on 21 January 1964. It is only wide, and consequently normally one-way northbound because of the side clearances required. The
London Bridge station provided at London Bridge; the first station south of the river was at Borough. King William Street was found to be badly placed owing to a steep incline towards the station from underneath the Thames, which limited its capacity. When the decision was made to extend the C&SLR northwards to Moorgate, a new pair of tunnels was constructed from north of Borough station on a new alignment providing a more convenient route and the opportunity to open a station at London Bridge. The tunnels to King William Street and the station were closed and the extension and London Bridge station