🛠️ Invention or technique

Underwater tunnel with tunnelling shield (Thames Tunnel)

Túnel bajo el agua con escudo (túnel del Támesis)

Date
1825-1843 · confidence high
Place
London (Rotherhithe-Wapping), England, United Kingdom
Credited to
Marc Isambard Brunel and Isambard Kingdom Brunel
People
👤 Isambard Kingdom Brunel1806–1859👤 Marc Isambard Brunel1769–1849
Field
Tools

What it is

The first tunnel dug beneath a navigable river, made possible by the tunnelling shield patented by Marc Brunel in 1818, inspired by the shipworm Teredo. It took 18 years and cost several lives, but proved the technique.

It opened as a pedestrian crossing in 1843; since 1869 it has formed part of the railway network (the East London Line).

What it led to

  • Underground railways and urban tunnels beneath rivers
  • Greathead's shield (1869) and London's 'tube'
  • Geotechnical engineering
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