Constructing the Blackwall Tunnel, London, 9 March 1895.

Constructing the Blackwall Tunnel, London, 9 March 1895.
3 1 c m
40cm
actual image size: 32cm x 23cm

Description

Photograph from the Pearson Archive, showing a man in a diving suit with winch gear. Engineered by Alexander Binnie, the Blackwall Tunnel was built to provide a road link under the Thames between Greenwich and Poplar. When the tunnel opened fully in 1897 it was the longest underwater tunnel in the world, at 6200 feet. Construction, using the tunneling shield technique pioneered by Marc Isambard Brunel in the building of his Thames Tunnel, was difficult. The tunnel had to be excavated through sand, and in places ran les than 6 feet beneath the river bed. A second prallel tunnel was opened in 1967 to ease traffic congestion.

© Science Museum / Science & Society Picture Library

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