Strand underpass

The Strand underpass is a one-way road tunnel in central London connecting Waterloo Bridge to Kingsway near Holborn.

The underpass is built within part of the former Kingsway tramway subway, which was 20 feet (6.1 m) wide and allowed bi-directional flow because of the fixed rails and relatively narrow width of the trams.

The underpass is a concrete box within the former tram subway, with the road surface at the original track level.

At the northern end of the underpass the road rises to the surface on a new carriageway supported by metal pillars.

This passes through the site of the former Aldwych tramway station; because of the greater width requirement, 27 trees and some pavement sections were removed for it to be constructed.