Tunnel To Be Completed In 2024. The ltc scheme will be the nation’s largest ever road scheme if it goes ahead, with a 3.4km long tunnel under the thames. With the remaining tunnelling, secondary lining of the tunnels and shafts, and the connections to the thames water sewer network progressing well, the verified programme provides confidence the project will be completed.

Denmark’s king frederik x, left, visits the fehmarn belt tunnel construction site at roedbyhavn and inaugurates the first tunnel element, on the island of lolland, denmark,. Running from acton in west london to stratford in east london, the 25km stretch of tunnel has been built 67m below the capital and will prevent around 95 per cent of sewage.