Incredible progress made in M27 junction upgrade as major milestone met

Drone footage has shown the progress made in upgrading junction 10 of the M27.

The motorway has been closed since Christmas Eve with major work taking place to enable traffic to enter and exit in both directions - with only one direction currently possible. With Boxing Day bringing news that the box slide was completed, an update from Hampshire County Council has advised that an 8,500 tonne concrete underpass structure has now been moved into place.

Pictures from Marcin Jedrysiak show the progress of the work on Saturday, December 27 as work continues with an embankment set to be built in the coming days.

The motorway is currently closed in both directions between Junctions 9 (Whiteley) and 11 (Fareham), with the road expected to re-open at 4am on Sunday, January 4. Drivers are being advised to plan ahead to avoid severe delays.

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Hampshire County Council provided an update on the works on Saturday, December 27. A post on social media said: “A new underpass structure is now in place at the M27 J10 following the successful completion of Hampshire’s first box slide - a major engineering milestone for this flagship highways project.

From yesterday afternoon and throughout the night, specialist teams used advanced hydraulic equipment and millimetre‑accurate control to slide a 8,500 tonne concrete structure into its final position. The entire process - shown in this time-lapse film - took less than 20 hours to complete. In the coming days, the embankments will be built - and the motorway surface will be replaced.

“The newly installed structure will become the underpass for a future ‘all‑moves’ junction, opening in late 2026 to improve journeys and enhance connectivity across this part of Hampshire, whilst supporting the growth of the Welborne Garden Village development.”

Find the latest pictures of the works below: