National Highways senior project manager Jonathan Wade said: “Periods of extreme weather in 2024 delayed some elements of our work but since then we’ve worked hard to recoup that time and still complete the on-road elements on schedule.
National Highways said its work to improve Junction 10 of the motorway in Surrey, initially scheduled to end this summer, will now not finish until spring next year.
National Highways also announced it will close the motorway for two out of three weekends next month to allow the demolition and removal of two old bridges as part of the scheme.
“We have spent months planning these closures, but they will still cause significant congestion and delays, so we are asking road users to allow extra time and use alternative routes where possible.
There were fears of severe congestion on diversion routes along A-roads during weekend closures in 2024, but many drivers heeded warnings to stay away, meaning long hold-ups were avoided.
