M3 junction 9 improvements - Demolition

The contractors are pleased to announce that the demolition of the northern bridge deck has been successfully completed. This marks another significant milestone for the M3 junction 9 improvements project.

Although the start of the closure was delayed, the project team and supply chain adapted to the changing circumstances and safely completed the demolition once access became available.

The closure also provided an important opportunity to progress works on the technology trench, helping to maximise the work delivered during the available closure period.

This timelapse video shows the huge operation involved in demolishing the northern M3 junction 9 roundabout bridge.

Remember second Bridge Demolition weekend closure:

• 9pm Friday 6 November to 6am Monday 9 November 2026 (southern bridge demolition)
  • M3 junction 9 to 8 northbound and southbound diversions