A £60 million scheme to replace a Cumbrian rail bridge will start next year.
Network Rail has begun work to replace the 60-year-old Clifton bridge, near Penrith, in 2026.
The 135m bridge, which takes trains over the M6 between the North of England and Scotland, has reached the end of its life.
Currently, only one train at a time is allowed on the bridge, which causes delays for passengers and freight services.
To complete the work, engineers need to dismantle the old bridge and take it away on the M6. The new bridge materials will be delivered by road and built on site.
This week, the team arrived on site to prepare a compound for the work, which will start in January 2026.
From now until the end of the project in 2026, there will be traffic management in place on the M6, starting around three miles south of Junction 40.
There will be a hard shoulder and lane one closure on the M6 northbound until, provisionally, the end of the project.
Olivia Boland, Network Rail sponsor, said: “We are rebuilding Clifton bridge over the M6 to keep rail passengers and motorway users safe for years to come. This project is essential as the bridge has reached the end of its life.
“The main work, which involves rail and road closures, is not happening until January 2026. However, people living in the Clifton area or driving past might notice the start of our construction activities.
“We’re working with National Highways to make sure we can carry out our work as safely as possible with as little inconvenience to local people and the travelling public. Thank you for your patience during this critical work.”
Steve Mason, National Highways’ programme delivery manager, said: “This is an essential Network Rail project to secure the future of one of the most important railway lines in the country.
“We’ll be working closely with Network Rail throughout to keep motorway users and local people up to date with developments – especially as we approach the two weekend closures of the motorway at the beginning of next year.”
In January 2026, the railway will be closed for two weeks so the bridge can be demolished and replaced over two weekends.
Network Rail said it was working with train operators to plan what alternative transport options will be available during this time.
The M6 will be closed over two weekends in January 2026. Between the evening of Friday January 2 2026 and the morning of Monday January 5 2026 and the evening of Friday January 9 2026 and the morning of Monday January 12 2026, the motorway will be closed in both directions between junction 39 at Shap and junction 40 near Penrith.
Network Rail and National Highways will share plans for diversionary routes as a soon as possible, it said.