The diversions drivers need to follow to avoid M3 weekend closure

09/12/2023

Surrey [1] motorists will need to follow multiple diversion routes this weekend as a key stretch of the M3 has been closed [2]. As of last night (December 8), both directions of the vital motorway have been shut between Junction 3 for the A322 (Lightwater/Bagshot) and Junction 4 for the A331 Blackwater Valley Route (Camberley [3]). This closure will remain in place for the entirety of the weekend until 6am on Monday (December 11).

The closure has been deemed necessary after a recent survey of the footbridge over the M3 at Bagshot [4], which connects footpath 184 from Whitmoor Road in Bagshot to Lightwater Country Park, raised serious health and safety concerns. National Highways will be demolishing this footbridge over the weekend and, in order for this to be completed safely, the road has been closed. Delays have already been reported on and around the M3 as a result, with higher volumes of traffic to be expected in the area throughout the entire weekend.

With such a substantial section of the M3 closed for the entire weekend, three diversion routes have been put in place to keep journeys moving. Sign-posted routes have been implemented by National Highways, the details of which you can find below. Southbound from junction 3 to 4 at Bagshot

Vehicles will need to exit the M3 at junction 3, and take a right turn on the A322.

Continue for 1 mile, and turn left on the A30, London Road. After 4.5 miles, take a left turn on the A331 and then rejoin the M3 at junction 4, and continue with your journey.

Northbound from junction 4a to 3 at Fleet

Exit the M3 at 4a, and join the A327 for 1.8 miles. Take a right turn on the A30 and continue for 7.1 miles, turn right on to Grove End link road.

Then turn left on to the A322, and turn left again to rejoin the M3 northbound at junction 3.

Northbound junction 4 slip road at Frimley

Those exiting junction 4 continue along the A331 and turn right onto the A30 London Road.

After 4.5 miles take a right turn onto the A322 and rejoin the M3 northbound at junction 3.

Travelling on foot

Those travelling on foot are asked to use the underpasses at the Lightwater interchange

References

^ Surrey (www.getsurrey.co.uk)
^ a key stretch of the M3 has been closed (www.getsurrey.co.uk)
^ Camberley (www.getsurrey.co.uk)
^ Bagshot (www.getsurrey.co.uk)
^ Live M3 traffic updates as full weekend closure causes heavy delays (www.getsurrey.co.uk)
^ M25 traffic held after multi-vehicle crash – live updates (www.getsurrey.co.uk)