Crossrail has released a sneak preview of work carried out on the £14bn project’s only tunnel under the River Thames.
The Thames Tunnel, which is nearing completion, runs between Plumstead and North Woolwich, and is the only point the trans-London line will cross the River Thames.
The tunnel is 2.6km long and about 15m below the existing river bed. The tunnel portals at North Woolwich and Plumstead will mark its entry and exit points.
Crossrail’s only slurry tunnel boring machines (TBMs) were used for the tunnel. These are slightly shorter than Crossrail’s other TBMs at 110m in length.
The tunnels are due to be completed in May this year. Crossrail will boost the capital’s rail capacity by 10% when it opens in 2018.