The M4 Junction 3-12 motorway upgrade project, which started construction in July 2018, is designed to increase capacity, and reduce congestion between Junction 3 (Hayes) and Junction 12 (Theale). In the sections where there is no pre-existing hard shoulder for conversion into an additional running lane, a total of 11 overbridges needed to be demolished and replaced with longer decks to enable continuity of the widened carriageway.
The £848m project is due for completion in Spring 2022, by which time it is expected that approximately 680,000t of material will have been excavated, 1.8M.m² of new surface laid, 130km of cabling installed and 63km of concrete barrier positioned.
Cordek were approached by the Principal Contractor Balfour Beatty VINCI joint venture to provide a lightweight structural fill solution to be used for the embankment construction adjoining the Datchet Road Overbridge, between Junction 5 and Junction 6.
Spencer Dock Bridge
London 2012 Olympic Diving Platforms
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