Medway Tunnel shape sinks in

The three 30,000-tonne reinforced concrete tube sections for the œ70 million immersed tube Medway Tunnel in Kent have now been floated out from the casting basin and submerged onto the river bed as the crossing starts to take shape.

The half a mile long tunnel is being built under a design-build joint venture by Tarmac HBM for Kent County Council. It will provide a dual carriageway link that relieves the busy A2.

Work is now under way casting concrete for the approach retaining walls on the portals.

The contract is due to be complete next year.