HS2 M6 Viaduct Launch: Advancing UK Rail Infrastructure

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Introduction

Over the weekend of September 26–28, the 230-metre long East Deck was moved into position over the M6 near Birmingham Airport. The operation, part of the HS2 project, involved a “fully restrained” sliding technique to minimize traffic disruption.

Project Overview

The twin 320-metre viaducts are being constructed in phases to carry HS2 trains over the motorway between London and Birmingham. The East Deck was moved into position, and the West Deck is scheduled for a similar operation next year. This was the second phase of the operation.

Operational Details

The team completed the slide and reopened the road from 12.30pm on Sunday 28 September, 9.5 hours ahead of schedule. The viaducts are being built in stages, assembled to one side and then pushed over the motorway. The weight of the concrete and steel deck will eventually reach 4,645 tonnes. The team moved the viaduct using strand jacks at an average speed of ten metres per hour. The structure was slid across non-stick pads. The viaduct was guided by rollers placed on the piers.

Collaboration and Stakeholders

The operation was led by HS2’s main works contractor, BBV, supported by Victor Buyck Steel Construction (VBSC). The team worked closely with National Highways, Birmingham Business Park, the NEC, and Birmingham Airport. The aim was to reduce the impact on road users and other planned traffic management in the area.

Technical Specifications

Each viaduct is formed of a hollow double-box structure made of weathering steel. The tallest of the four pairs of concrete piers supporting the viaducts measures 9.9m in height. A 4.5m high parapet will be installed to reduce noise. The viaduct was launched with 51 precast slabs already installed on top of the steel structure.

Conclusion

The second phase of the viaduct launch over the M6 was completed, ahead of schedule.

The next phase of the operation is planned for later this year. The project aims to minimize disruption while constructing the infrastructure for HS2.

Company Summary

Balfour Beatty: Balfour Beatty is the construction contractor working on the HS2 project.

BBV: BBV is HS2’s main works contractor, a team made up of Balfour Beatty and VINCI.

HS2 Ltd: HS2 Ltd is the company responsible for the HS2 project.

National Highways: National Highways is a government-owned company responsible for operating, maintaining and improving England’s motorways and major A roads.

VINCI: VINCI is the construction contractor working on the HS2 project as part of the BBV team.

Victor Buyck Steel Construction (VBSC): Victor Buyck Steel Construction (VBSC) is a specialist steelwork company supporting BBV.

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