120 colossal beams installed on a 14,500-tonne box structure which will carry HS2 under the A46 Kenilworth Bypass
The huge box is currently being built on land next to the A46, rather than beneath the carriageway itself, which significantly minimises long-term disruption
HS2 engineers worked around the clock to complete essential preparation work on a section of the M42, finishing the work five hours earlier than planned
Building work will now begin on the 300m bridge structure that will carry the high-speed railway over the motorway
The construction method will use pre-fabricated hollow building blocks to create a ‘twin box’ structure, cutting construction time and reducing disruption to road users
