chapter  2
- Development of the immersed tunnel
Pages 26

The idea of the immersed tunnel arrived some time before a project was actually realized. The first concepts were developed in England in the early 1800s, at the time Brunel was starting out on his Thames Tunnel in London. The birth of immersed tubes and shield-driven tunnels therefore occurred at around the same time, even though immersed tubes were much slower to be implemented.