The massive steel structure of a new £60 million railway bridge set to take passengers over one of Britain’s busiest railways over the M6 has now been completed.
Passengers travelling on the West Coast Main Line through Penrith are set to benefit from the new bridge.
Today, Network Rail has revealed time-lapse footage of the new structure – which measures 130m in length and weighs in at around 4,200 tonnes – during its assembly by contractor partner Skanska in a specially built compound beside the motorway.
Now that the steel structure is complete, works to finalise the bridge deck are set to be completed in November.
The previous Clifton bridge is nearly 60 years old and weight restrictions mean it can only carry one train at a time, causing delays to services.
It is in advance of the main phase of the project when the old structure will be removed and new one installed during a dual railway and motorway closures in the first two weeks of 2026.
No trains will run on the West Coast Main Line from Oxenholme to Carlisle between December 31 and January 15 2026.
To make the most of the same closure, more than 80km of overhead cables which power trains will also be replaced, as well as an ongoing £61m digital upgrade to signalling systems north of Carlisle.
William Brandon, Network Rail’s project manager, said: “It’s brilliant to see the new Clifton bridge structure now taking shape beside the M6 ready for its ambitious installation in the new year as part of our major upgrades to keep passengers and freight moving on the West Coast Main Line for decades to come.
“In January we will not only start the main phase to replace the bridge, but elsewhere in Cumbria we’ll also renew over 80km of overhead lines which power trains and continue with our major modernisation of West Coast Main Line signalling systems.
“These essential upgrades will involve some closures of the road and the railway, so we’re advising people to plan journeys well in advance while we work with National Highways and our train operators to make people aware of the scale, impacts and future benefits of our multi-million-pound investment.”
Rosario Barcena, Skanska’s rail programme director, said: “We have made fantastic progress, with the new 4,200-tonne structure nearing completion.
“Demolition of the existing bridge and installation of the new one are both complex and time critical operations, to which we are bringing our expertise from previous similar projects for Network Rail and the latest digital technologies.
“It has been a super collaborative project, where we have worked with Network Rail, National Highways, local authority and supply chain partners to ensure that we are fully prepared.”
The M6 will also be shut on two consecutive weekends for the old bridge to be removed and new one moved into position, between:
- Evening of Friday January 2 to morning of Monday January 5 2026
- Evening of Friday January 9 to morning of Monday January 12 2026
During these periods, the motorway will close in both directions between junction 39 at Shap and junction 40 near Penrith.
Motorists are strongly advised to plan their journeys.
