INSIGHT | CROSSRAIL LIBRARY


The Elizabeth line fully opened on Sunday the


21 May this year, when the service was increased to the full 24 trains per hour in each direction in the peak period. This was the final stage of a phased introduction which first saw trains serving the new central London stations from May 2022. The new railway connects the existing railways to


the east and west of London through 42km of tunnels in the central area and 10 new stations, eight of which are below ground. Construction started at Canary Wharf in 2009 and involved 39 Tier One contracts and two major Project Partners. The running tunnels were excavated between 2011 and 2015 by eight tunnel boring machines (TBMs) and the below ground stations were built using a variety of techniques, including top down box construction and sprayed concrete lining (SCL) undertaken in some cases as enlargement from the running tunnels, and in others as new excavation.


42 | December 2023


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