M3 junction 9 improvements. Full weekend closures 15/01

M3 Full Weekend Closures

To ensure the safe installation of steel beams for the new M3 roundabout bridge decks, the M3 will be fully closed in both directions between junctions 8 and 9 on the following weekends:

• 9pm Friday 30 January to 6am Monday 2 February 2026
• 9pm Friday 13 February to 6am Monday 16 February 2026

For local diversion routes, please refer to the following link: M3 junction 9 to 8 northbound and southbound diversion.

The diversion routes are designed to suit all vehicle types.

You are advised not to use a Satnav when following any of the diversions because there is a risk it could direct you down an unsuitable road or back onto the network when it is closed.