The M3 London-bound is set to experience a full closure over the weekend, so if you're heading up that way from Southampton you'll need to be aware of a few details including diversion routes.

Motorists travelling that way from Southampton and the Hampshire area are being encouraged to plan ahead as there will be a closure between Junctions 4a and 3 from Friday, February 9 to Monday, February 12.

The carriageway will be shut from 9pm on Friday evening until 6am on Monday morning so that extensive repairs can be carried out.

Daily Echo: The full closure on the M3 will allow extensive works to take placeThe full closure on the M3 will allow extensive works to take place (Image: PA)

M3 London-bound diversion route for the weekend

If you are travelling on the London-bound way on the M3 from Southampton you will need to be aware of the diversion route that is in place.

On the National Highways website, it shares the diversion route is as follows:

  • All vehicles should exit at M3 Junction 4a and join the A327 for approximately 1.8 miles
  • Traffic should then turn right onto the A30 and continue for approximately 7.1 miles
  • Vehicles should then turn right onto Grove End link road, turning left onto the A322, before turning left to rejoin the M3 London bound at Junction 3.

Additionally, National Highways will also be closing the London-bound slip road approaching from Frimley (the on-slip) at Junction 4 over the same weekend.

The diversion route for that is as follows:

  • All vehicles from Junction 4 should use the A331 and then turn right onto the A30 London Road.
  • After approximately 4.5 miles turn right onto the A322 and then rejoin the M3 London bound at Junction 3.

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Why are the M3 London-bound closures taking place?

A spokesperson from National Highways said: “While works are progressing well, weekend closures are necessary to allow contractors to complete the work.

“This includes installation of an upgraded barrier, resurfacing, road markings and removal of traffic management measures. Drivers are being advised to plan ahead and leave extra time for their journeys.

“The M3 London bound carriageway will be fully closed (from 9pm to 6am) between junctions 4a at Farnborough/Fleet and 3 at Bracknell/Woking.“