DETAILS OF works on Brunel's Thames Tunnel in East London have been published in the latest issue of the ICE transport journal.
Members can read an account of how a £6.3M relining project was transformed when the 155 year old brick lined tunnel won a Grade II heritage listing on the eve of the works in March 1995.
The full architectural appearance of the tunnel - including 64 cross passages with Greek Doric-style arches - had to be preserved in the 200mm concrete lining.
According to the paper by Martin Roach of London Underground Infrastructure Consultancy Services, the final cost of strengthening work was £23.2M. The tunnel, which carries trains between Rotherhithe and Wapping on the East London line, re-opened to traffic after 25 months.