Highways

Silvertown Tunnel

Client Iridium, John Laing, Hochtief (‘Silvertown Thames Connect’)
Services
Project Value £850m
Status Completed

Capita was the Lenders’ Technical Adviser supporting Silver Thames Connect consortium’s bid during the tender stage of the project in 2018 and 2019. The project comprises a dual carriageway crossing beneath the river Thames and includes two 1.4km long bored tunnels, tunnel approach works and tie-ins and modifications to the local road network.

The tunnelling works require a 12m diameter tunnel boring machine, the largest to be deployed in the UK, and have to overcome challenges of low cover above the tunnel bores, old abandoned buried foundations and contaminated land.