M6 Cumbria Closure: Major Rail Bridge Replacement Work Resumes Tonight
Work is set to resume tonight on a major infrastructure project affecting both road and rail travel in Cumbria, as engineers prepare to replace a key railway bridge spanning the M6 motorway.
The project involves the replacement of the 60 years old Clifton rail bridge on the West Coast Main Line, which currently operates under weight restrictions, allowing only one train to cross at a time and causing delays for passengers.
To safely install the new structure, sections of the M6 and the West Coast Main Line will be closed, leading to significant but temporary disruption.
Why the Work Is Needed
Network Rail says the existing bridge has reached the end of its operational life. The new structure will remove current restrictions and improve reliability on one of the UK’s busiest rail routes.
William Brandon, project manager at Network Rail, described the scheme as “vital,” adding that it will improve passenger journeys for decades to come. Alongside the bridge replacement, engineers will also renew over 80 kilometers of overhead power lines and continue work on a major signaling modernization programme.
Passengers are being urged to check travel plans in advance via National Rail Enquiries.
M6 Closure Details
The M6 will be closed in both directions between Junction 39 (Shap) and Junction 40 (Penrith) from 8pm on Friday, January 9, until 5am on Monday, January 12, 2026.
After a year of preparation, engineers will install a 130 metre long, 4,200 tonne steel bridge during a planned two weeks rail closure in early 2026.
Motorists Advised to Plan Ahead
Steve Mason, programme delivery manager at National Highways, said the project is a “once in a lifetime” upgrade that cannot be carried out safely without closing the motorway.
Diversion routes will be in place, but drivers are warned to expect delays and allow extra time for journeys.
The project is part of a wider investment to future-proof the West Coast Main Line, including a £61 million digital signalling upgrade north of Carlisle, aimed at improving performance and reliability for years to come.