HS2 engineers have successfully slid a 13,000-tonne viaduct over the M42 motorway in the West Midlands, a UK-first engineering achievement that significantly reduced disruption to motorway traffic.
The operation, completed over the weekend, involved moving the massive structure into place using a technique never before used in Britain. This approach allowed the motorway to remain open throughout most of the work, with only brief overnight closures.
UK-First Engineering Technique
The viaduct, part of the HS2 high-speed rail project, was constructed alongside the M42 and then slid into position using a system of jacks and temporary supports. This method avoided the need for a lengthy full closure of the motorway, which would have caused severe congestion.
According to HS2 Ltd, the slide was carried out with precision, with the structure moving at a rate of about 6 metres per hour. The entire operation took several days to complete, with teams working around the clock to ensure safety and accuracy.
Reducing Disruption for Drivers
By using the slide technique, HS2 minimised the impact on the thousands of drivers who use the M42 daily. The motorway remained open during peak times, and only overnight closures were necessary to allow the final positioning.
A spokesperson for HS2 said: "This is a fantastic achievement for the project and a great example of innovative engineering. By sliding the viaduct into place, we have been able to reduce disruption to motorway users while delivering this vital piece of infrastructure."
Next Steps for the Viaduct
The viaduct will now be fitted with track and other equipment as part of the wider HS2 route through the West Midlands. The project continues to progress, with the aim of delivering high-speed rail services between London, Birmingham, and the North.
HS2 is expected to open in phases, with the first services running in the late 2020s. The successful slide marks a key milestone for the project, demonstrating the capability of UK engineers to deliver complex infrastructure.
