Balfour Beatty VINCI, HS2’s construction partner in the West Midlands, is preparing to launch the second viaduct over the M6, marking another major milestone in the delivery of the UK’s highspeed rail network. Engineers are gearing up to move the west deck of the M6 South viaduct, which is currently being assembled in four sections near Chelmsley Wood. The first 107metre section will be slid into position over the M6 junction 4 southbound slip road , using a specialist hydraulic jack to manoeuvre the 1,250tonne weathering steel structure across 102 metres onto its concrete piers.  Once installed, the west deck will sit parallel to the 320metre east deck, which was safely launched over the M6 in three stages in 2025. The final phase of that installation was a UKfirst, completed while traffic continued to flow beneath the structure thanks to close collaboration between HS2 and National Highways. Russel Luckhurt, Civil Engineer at Balfour Beatty VINCI said: “Building on the success of installing the East deck viaduct last year, we’re gearing up for the first launch of the neighbouring West deck in April. “We’re using the same sliding technique, where a giant hydraulic jack will push the viaduct across the motorway in multiple stages throughout the year. The previous launches provided the team with invaluable experience, which they’re eager to apply to future works on this eye-catching structure spanning the M6.”  The west deck has required an additional assembly stage compared with the east deck. Space constraints, the staggered positioning of the abutments, and the curve of the adjacent loop road have created a shorter launch platform, meaning the structure must be built in four smaller sections before sliding into place. Commenting on progress, Ian Clarke, HS2 Ltd’s Project Manager for the M6 works, said: “After safely completing the first viaduct on time, our engineers have wasted no time in forging ahead with the second installation. Thanks to the world‑class engineering techniques we’re adopting on HS2, we’ve once again been able to reduce the number of temporary closures on the motorway while we carry out these essential works.” Once complete, the twin 320‑metre viaducts will carry HS2 trains over one of the busiest parts of the motorway network, improving capacity and connectivity between Birmingham and London. The launch represents another significant achievement for Balfour Beatty VINCI as it continues to deliver major civil engineering works across the West Midlands section of HS2. Building, Design & Construction Magazine | The Choice of Industry Professionals

Winvic Construction Ltd, a leading main contractor that specialises in the design and delivery of private and public sector construction and civil engineering projects, has been appointed by the Greater Cambridge Partnership to deliver the Waterbeach railway station haul road – the company’s first project awarded under the Eastern Highways Alliance  Framework (EHF4). The £800 million framework is managed by Central Bedfordshire Council and includes a collaborative group of ten local authorities across Cambridgeshire, Essex, Hertfordshire, Kent, Luton, Norfolk, Peterborough, Southend-on-Sea, Suffolk, and Thurrock. The project commenced in November and is due for completion in Summer 2026, with Winvic delivering the works under a NEC4 Option A contract. Procured via a competitive mini competition under Lot 1 of the EHA Framework, the £3 million scheme forms a key early enabling element of the wider gateway works for the construction of the new town of Waterbeach and the future railway station. The 3.1km haul road is crucial to providing access for the next phase of works, enabling Spencer Group to begin construction of the new station. Approximately 830 metres of the route will utilise the existing former airfield taxiway as a foundation within the Urban & Civic site, with a further 2.3km of new carriageway constructed across the wider Waterbeach development. On completion, the road will feature a 3.75m-wide single carriageway with passing bays on the farmland section and a 7.0m-wide single carriageway along the taxiway, supported by drainage and fencing throughout. A significant programme of earthworks and utilities protection will be undertaken, with Winvic reusing surplus site-won material for level adjustments, bund creation and ditch excavations. Winvic is also further exploring value-engineering opportunities to reduce material use, cost and carbon where feasible. Winvic will manage extensive stakeholder engagement throughout delivery, including regular coordination with the Greater Cambridge Partnership, which is responsible for the delivery of the new railway station itself, and the developer Urban & Civic. Key traffic and pedestrian management measures will be implemented on Bannold Drove (Green Lane), with early engagement planned to minimise disruption to the surrounding community. The site’s historic use as a former army barracks also introduces archaeological oversight, UXO considerations and remote working requirements, with the team operating up to 3km from the main compound. As part of its EHA social value commitments, Winvic will deliver a structured programme of employment, skills and community initiatives in collaboration with local supply chain partners, SMEs, educational providers and charities. Activities will be shaped by local needs and aligned with framework reporting requirements, including opportunities for apprentices, underrepresented groups and targeted community support. Rob Cook,  Winvic’s Managing Director for Civils and Infrastructure, said: “Securing our first project under the EHA Framework is a significant milestone for Winvic and reflects the strength of our relationship with the Greater Cambridge Partnership, Cambridgeshire County Council and partners across the region. The Waterbeach Station haul road is an important enabling scheme that underpins the long-term growth of the new town and the delivery of critical transport infrastructure. We look forward to bringing our civil engineering expertise, collaborative approach and commitment to creating a positive impact in the local area, helping set the standard for future schemes under the framework.” Thomas Fitzpatrick, Head of Programme at the Greater Cambridge Partnership, said: “We’re pleased to appoint Winvic to the first phase of work for the new Waterbeach station – building the haul road. The road is designed to minimise disruption to residents during construction of the new station later in the year. We’ve got a package of transport projects in Waterbeach – a new travel hub with park and ride facilities, a new busway, and the Waterbeach Greenway. With the new station, we’re not only providing another sustainable transport option but also unlocking new housing for local people.” Join Winvic on social media – LinkedIn, and Instagram. Building, Design & Construction Magazine | The Choice of Industry Professionals

The City of London Planning Committee resolved to grant planning permission for Network Rail’s transformation of London Liverpool Street, which was last redeveloped in 1991 after passenger numbers tripled over the past 35 years. The scheme is designed to future‑proof the station for decades. Liverpool Street currently handles about 118 million passengers a year across London, East Anglia and the east of England. With annual users forecast to rise by 35% to 158 million by 2041, the approved plans aim to ensure the station can accommodate more than 200 million people in the longer term. Network Rail says the project will also support the Square Mile’s growth, with figures indicating the transformation could add up to £4.6bn a year to the City of London economy through increased visitor numbers – a contribution comparable in scale to a 1p change in the basic rate of income tax, referencing HM Revenue & Customs’ January 2025 “Direct effects of illustrative tax changes” bulletin. Key passenger improvements include: Heritage conservation is central to the design, with the Victorian trainshed remaining untouched. The plans will also open up new vantage points over the historic architecture, bringing passengers closer to the station’s original fabric. The infrastructure works are supported by a new office building above the concourse, incorporating a publicly accessible roof garden. Network Rail says the workspace will be among the capital’s best‑connected and most sustainably located, aligning with the City’s growth ambitions. Ellie Burrows, Managing Director for Network Rail’s Eastern region, said: “This decision represents a key step towards the transformation of Britain’s busiest station and marks the beginning of an exciting new chapter for Liverpool Street. “Our plans focus on improving the everyday experience for passengers whilst respecting the station’s unique heritage. With annual passenger numbers forecast to grow to 158 million, this approval ensures the station will be future proofed for decades to come.” Building, Design & Construction Magazine | The Choice of Industry Professionals

Plans for a major overhaul of Liverpool Street Station have been approved by the City of London Corporation, paving the way for a comprehensive redevelopment of Britain’s busiest railway station. The scheme will create a modern, fully accessible transport hub designed to meet growing passenger demand, while introducing new commercial, cultural and public spaces within and around the station. The project aims to futureproof the gateway to the Square Mile, ensuring it remains fit for purpose in an increasingly competitive global city landscape. Chris Hayward, Policy Chairman of the City of London Corporation, described the approval as a significant milestone for the City. He said the redevelopment would strengthen the Square Mile’s business ecosystem through upgraded infrastructure, generate employment opportunities and reinforce London’s standing as a world-leading destination. Hayward added that the plans would ensure residents, workers and visitors benefit from a more inclusive, efficient and forward-looking transport interchange, capable of supporting the City’s continued growth. Tom Sleigh, Chairman of the Planning and Transportation Committee, said the scheme represents a substantial upgrade to a station that handles millions of passengers each year. He highlighted the architectural ambition of the design, including the reimagining of the station’s distinctive brick arches, which will help redefine Liverpool Street as a contemporary transport landmark. The redevelopment is expected to enhance passenger experience through improved accessibility, circulation and amenities, while also delivering high-quality new spaces that contribute to the wider urban environment. With approval now secured, the project marks a decisive step towards modernising one of the capital’s most important transport gateways and reinforcing its role at the heart of London’s commercial core. The approved scheme is set to transform Liverpool Street into a future-ready hub that blends heritage, connectivity and commercial opportunity. Building, Design & Construction Magazine | The Choice of Industry Professionals

c.£100m five-year project will provide critical access to Agratas gigafactory in Somerset. Costain, the infrastructure solutions company, has been appointed to design and build a new junction on the M5 motorway. Awarded through the Regional Delivery Partnership (RDP) framework, the contract is worth approximately £100m to Costain over a five-year period. Junction 22A is a new motorway junction being constructed between Burnham-On-Sea and Bridgwater, in Somerset. It will provide access to the Gravity Smart Campus and £4bn gigafactory being developed by Agratas, which will be Britain’s biggest electric vehicle battery manufacturing facility. The junction will consist of north facing slip roads and will alleviate congestion on the motorway south of the Huntspill river. Costain’s role as the project’s delivery integration partner and main works contractor will see it design and construct the new junction before handing it over to National Highways upon completion. In its role, Costain will provide a range of best-in-class infrastructure services, including design, engineering, programme delivery and supply chain management. WSP will support Costain as design partner. Alex Vaughan, Chief Executive Officer of Costain, commented: “This award is built on our long-established highways delivery expertise and trusted partner relationship with National Highways. We will work closely with our supply chain partners to design and deliver this new junction that will provide access to the new gigafactory and help to drive economic growth in this region of the UK. “This investment, supporting the UK’s growth ambitions, is another example of Costain’s commitment to deliver critical national infrastructure programmes that improve people’s lives.” Costain is a long-term partner to National Highways and last year completed the construction of 41 emergency areas on the M1 ahead of schedule. Costain is also providing specialist technical engineering advice to National Highways under its Specialist Professional and Technical Services Framework (SPaTS3), which will cover the whole of the period for Roads Investment Strategy 3 (2026-2031). The infrastructure solutions company is also National Highways’ delivery partner for the M60/M62/M66 Simister Island Interchange scheme. In addition, Costain was recently added to join the Eastern Highways Alliance’s EH4 Framework, covering a range of civil engineering and construction works across the East of England. Building, Design & Construction Magazine | The Choice of Industry Professionals

Gloucestershire County Council has secured an additional £71.5 million from the UK Government to deliver the transformative M5 Junction 10 Improvements Scheme. The funding will enable the council to press ahead with key transport upgrades designed to unlock homes, jobs and investment across the county. On completion, the scheme is expected to support the delivery of more than 20,000 new homes — including over 7,000 that are affordable — underpin the Golden Valley development and the National Cyber Innovation Centre and technology cluster with around 12,000 skilled jobs, and build on the successful delivery of the £33 million Arle Court Transport Hub. Development consent for the project was granted by the Secretary of State for Transport in June 2025, marking a major milestone and confirming its strategic importance for Gloucestershire’s transport network and economy. Cllr Julian Tooke, Cabinet Member for Business, Economic Development, Planning and Infrastructure, said: “Securing this additional Government funding is a turning point for Gloucestershire. The delivery of the M5 Junction 10 Improvements Scheme is a catalyst for transformational growth and opportunity in the region, driving future investment and prosperity. I’m grateful to Homes England and our partners for their support and confidence in this essential infrastructure.” The newly confirmed £71.5m is from the UK Government’s Housing Infrastructure Fund, administered by Homes England, and will close the remaining funding gap to deliver the full set of improvements. Funding already secured includes contributions from the Housing Infrastructure Fund, district council Community Infrastructure Levy receipts, Gloucestershire County Council, and Section 106 developer contributions from sites that will directly benefit from the scheme. Gloucestershire County Council is leading delivery of the scheme in collaboration with National Highways and other partners. Weather-dependent preparatory works began in autumn 2025 to avoid rising costs and keep the project on track, with appointed contractor Galliford Try undertaking early site activities. With the extra funding now in place, the council and partners will finalise delivery arrangements and continue preparation ahead of the main construction phase starting in autumn 2026. Building, Design & Construction Magazine | The Choice of Industry Professionals

Construction has been completed on HS2’s longest tunnel, marking a significant milestone for one of the UK’s most complex civil engineering projects. Civil engineering works have now concluded on the 10-mile twin-bore Chiltern tunnels, following the completion of the final vent shafts at Chesham Road and Little Missenden. The achievement brings to a close nearly five years of intensive construction activity through the Chiltern Hills and clears the way for the next phase of fit-out works. With the structural works finished, the tunnels are now ready to be equipped with track, overhead power systems and mechanical and electrical installations. Enabling works for mechanical, electrical and plumbing systems are expected to begin later this year, with rail systems to follow once that stage is complete. Main construction of the tunnels was carried out by Align JV, a joint venture between Bouygues Travaux Publics, Sir Robert McAlpine and Volker Fitzpatrick. Works began in May 2021 with the staggered launch of two 2,000-tonne tunnel boring machines from a site near the M25 at Maple Cross in Hertfordshire. Ahead of tunnelling, five deep ventilation and access shafts were constructed along the route, reaching depths of up to 78 metres. Each shaft headhouse was designed by Grimshaw Architects to sit sensitively within the Chilterns landscape. The tunnel boring machines advanced north at an average rate of 16 metres per day before completing their drives near Great Missenden in early 2024. Since then, teams have focused on constructing the porous tunnel extensions at the north and south portals, installing internal walkways and completing 40 cross passages linking the twin bores. HS2 Ltd’s head of civil engineering for the Chiltern tunnel, Mark Clapp, described the project as a rare opportunity for engineers to work on a scheme of such scale and complexity. He praised the collaboration between HS2 Ltd, Align JV and its supply chain, highlighting the quality and commitment shown throughout delivery. Align JV project director Adrien Baudard said completing the civil works was a point of pride for the entire team, noting advances in safety, sustainability and technical performance achieved during the programme. He added that the project’s approach to carbon reduction, safety innovation and skills development would influence tunnelling best practice for years to come. The Chiltern tunnel is the second of HS2’s five twin-bore tunnels to reach structural completion, following the one-mile Long Itchington Wood tunnel in Warwickshire, completed last year. Despite progress on individual elements, the wider HS2 programme remains behind schedule and over budget. HS2 Ltd chief executive Mark Wild continues to work on a reset plan aimed at delivering the remaining London to Birmingham route more efficiently and at the lowest reasonable cost. Building, Design & Construction Magazine | The Choice of Industry Professionals

The construction of one of the most complicated parts of the HS2 project took a step forward over the Christmas break, as Balfour Beatty VINCI completed two key viaduct spans over the existing railway near Water Orton in Warwickshire. The spans form a small part of the Delta junction – a huge triangular intersection being built to the east of Birmingham for the new high-speed railway. Like the nearby Spaghetti Junction, it is formed of a complex series of interconnected viaducts, taking the high-speed line over motorways, local roads, existing railways, rivers and floodplains. It is designed to carry HS2 services to and from Birmingham, as well as connecting to the mainline heading north and south. To maintain speeds of 360km/h on the mainline and around 200km/h on the approaches to Birmingham, the junction is stretched out over a far larger area than a motorway junction, with 2.6 miles of track, including underpasses, flyovers and five major viaducts. The Water Orton viaducts are at the northern end of the junction and will allow southbound trains to join the spur into Birmingham Curzon Street and the rolling stock depot at Washwood Heath. Engineers working for Balfour Beatty VINCI used a five-day closure over the quieter Christmas period to safely complete the two parallel spans over the existing Birmingham to Peterborough railway line.  With the railway crossing complete, the team can move on to the next sections of the viaducts over the nearby A446 road and the M42 motorway next year. Stephane Ciccolini, Senior Works Manager at Balfour Beatty VINCI, said: “This complex section of the HS2 route has taken a major step forward, after Balfour Beatty VINCI teams successfully erected two viaducts spans over an existing railway near Water Orton. “We’ve worked around the clock during the Christmas period to deliver this incredible feat of engineering, using a specialist cantilever technique not seen in the UK before this project. This approach involves using a 22-metre-high mast and a 14-metre-high swivel crane to move each individual segment into place until the span is complete.” Sam Hinkley, HS2 Ltd’s Senior Project Manager said: “It’s great to see the Water Orton viaducts in place across the railway and I’d like to thank everyone who gave up their Christmas to help us reach this important milestone and I’d like to thank passengers for their patience. “These precast segmental viaducts form a key part of the Delta junction – one of the most complex parts of the HS2 project and I look forward to seeing more progress in the year ahead.” Once complete, the two single-track Water Orton viaducts will stretch for around 1.4km across two railways, a river, local roads and the M42. The viaducts are made of pre-cast concrete segments that are installed using a huge cantilever process. Once each span is in place, the permanent post-tensioned cables are installed in the hollow centre of the viaduct allowing the temporary cables stays to be moved forward to support the assembly of the next span. The same process is repeated between each pier until all the spans are complete. The 32 concrete piers that support the Water Orton viaducts are up to 20m tall and cast in situ using bespoke formwork and reinforcing cages manufactured at nearby Coleshill. The Water Orton viaducts form part of 3.7 miles worth of viaduct across Delta junction which are being built using this approach. All 2,742 concrete segments needed for the viaducts are being manufactured at a temporary factory at nearby Lea Marston. Building, Design & Construction Magazine | The Choice of Industry Professionals

Motorists, rail passengers and residents impacted by the £60m renewal of a major West Coast Main Line railway bridge are being thanked after disruptive demolition work was successfully completed this weekend. The huge project near Penrith in Cumbria involves a 130-metre-long bridge being removed and a new one installed over the first two weekends of 2026. Network Rail and its principal contractor Skanska achieved the first phase removing Clifton Bridge in the early hours of this morning (Monday 5 January). It required a full motorway closure of the M6 between junctions 39 and 40 from 8pm on Friday 2 until 5am on Monday 5 January. A fleet of some of the country’s largest excavators were used to chip away at the 1960s-built concrete structure which spanned over six lanes of the highway for nearly 60 years. After looming over the motorway for decades, hundreds of people came to see the structure turned to rubble in just hours over the course of the weekend. Timelapse footage has now been released marking this major milestone in the project as the motorway reopened at 3.50am – 70 minutes earlier than scheduled. For the next week thousands of motorists will travel underneath a large gap in the West Coast Main Line where the bridge once crossed. That’s before a modern 4,200-tonne steel and concrete structure is moved into place during a further 57-hour motorway closure this coming weekend (8.00pm Friday 9 until 5.00am Monday 12 January). With the West Coast Main Line currently split in two, rail passengers are encouraged to check www.nationalrail.co.uk to plan their journey in advance* until Wednesday 15 January when the whole project is due to finish and trains will run again once the railway is reinstated. Christian Irwin OBE, Network Rail North West and Central region Capital Delivery director, said: “The demolition of Clifton bridge has been a mammoth task and I’d like to thank drivers who’ve had to use the road diversions, rail users whose journeys have changed and people local to the construction site who’ve been extremely patient with all the noise and disruption. “This £60m project forms part of our major investment programme to improve journeys on the West Coast Main Line for passengers and freight for generations to come.” Rosario Barcena, Skanska UK rail programme director, said: “It’s been an incredible effort by the entire team to complete the demolition of the former Clifton Bridge, working 24/7 across the weekend to make sure that the M6 motorway could re-open on Monday morning. “Technically it was a complex operation which we managed with great precision and care. The works were completed safely, with the support structures that the new 4,200 tonne bridge will sit on successfully retained.  “It’s been a super-collaborative approach with Network Rail, National Highways and our supply chain team. I’d also like to extend my thanks to people travelling in the region and the local community for their understanding while we undertake these essential works.” This ongoing project is just one of a swathe of journey improving upgrades between London and Cumbria over the festive season. The Christmas and New Year work has seen a combined investment of nearly £200m along the West Coast Main Line, which forms part of a much larger £400m investment over the next four years. Also today (Monday 5 January) a major railway junction between Northampton and Milton Keynes reopened after a £26m track renewal which began on Christmas Eve. Preston station also reopened after a 100-hour full closure for signals and the structures which support them to be upgraded. For further updates on all our our West Coast Main Line improvement work you can follow us on X @NetworkRailWCML. To plan rail journeys in advance please us www.nationalrail.co.uk for the latest travel information. Building, Design & Construction Magazine | The Choice of Industry Professionals