HS2 first as giant bridge slid across live motorway

HS2 engineers claimed a UK-first over the weekend when they successfully slid a 4,600-tonne viaduct across the M6 without closing the motorway.
The 17 hour-long operation was the culmination of an epic three-stage process to assemble and install the 315-metre East deck of the M6 South viaduct, which will carry high-speed trains heading to Birmingham and further north.
While the previous slide had required a weekend closure of the main carriageway, the team – led by HS2’s main work co