Final segment installed at problem HS2 green tunnel

The last of 5,020 reinforced concrete segments has been lifted into position at an HS2 cut and cover tunnel plagued by construction problems.
The milestone was reached on the Chipping Warden Green Tunnel in Northamptonshire where faults were found in 2022 in precast concrete segments.
With the pre-cast wall installation finished, the construction team are now focused on completing the waterproofing and internal floor slab and all other internal works, including the emergency walkways that will r