Crossrail has said that compensation grouting work in the Kingsway Tram Tunnel has been completed clearing the way for the structure to be restored and returned to owner London Borough of Camden.
Crossrail took possession of the tunnel in 2012 in order to locate a compensation grouting shaft to mitigate the effects of driving the Elizabeth line tunnels below the site.
This use of the tunnel was the first time it had played a public transport role in 60 years following closure of the tunnel in 1952. The tunnel was opened in 1906 to link Holborn with Waterloo Bridge.
The tunnel provided an ideal location to locate an 8m deep, 5m diameter shaft to allow Keller to undertake tube a manchette grouting to compensate for ground movements from the tunnel drives and excavation of a 60m shaft nearby.
“The Kingsway Tram Tunnel holds a special place in London’s transport heritage,” said Crossrail delivery director Bill Tucker. “Built to connect one of London’s earliest transport networks, it is fitting that the tunnel helped us build the capital’s newest railway. Now that construction of the Elizabeth line is nearing completion, we are returning the tunnel back to its current owners.”
Work to restore the tunnel is now underway. The grout shaft has been filled and the concrete floor has been reinstated. Work is now focusing on reinstalling the iron tram rails.