31-07-2025
Major A-road which joins Britain's busiest motorway & is used by thousands every day to close for entire weekend
A MAJOR A-road which joins Britain's busiest motorway and is used by thousands every day is set to close for an entire weekend.
Motorists have been urged to prepare for serious disruption as diversion routes have been put in place.
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National Highways is closing the A3 in both directions this weekend in Surrey.
The agency stated: "To help people plan their summer journeys, we're announcing all confirmed A3 weekend closures through to September in one go.
"The next closure is scheduled for August 1 - 4, with a further weekend closure during September.
"Each will involve restrictions on parts of the A3 near junction 10."
The A-road will be shut between Junction 10 (Wisley Interchange) and the B2215/A247 at Send from 9pm on Friday, August 1 until 6am on Monday, August 4.
Resurfacing of the road will be carried out and several gantries installed.
Drivers have been advised to take diversion routes provided by National Highways and allow for extra travel time.
There is also one more A3 closure planned after this weekend scheduled for Friday, September 12 until Monday, September 15.
The A3 southbound carriageway between the A245 Painshill roundabout and Burnt Common will be shut.
"We'll confirm diversion routes and share them ahead of the closure weekend, supported by web updates and local travel advice," National Highways said.
T he A3 was previously shut in both directions in April leading to travel chaos.
Drivers were unable to use the stretch between the M25 Junction 10 and A3 Wisley interchange due to the ongoing works.
And drivers weren't able to enter or exit the M25 at Junction 10 in May after another weekend closure.
The closures are part of the £317 million project to upgrade the A3/M25 interchange.
The M25 junction 10 and A3 Wisley Interchange is the busiest section of the M25, with over 300,000 vehicles travelling through it every day.
A statement from Surrey County Council's website reads: "Due to the volume of traffic and the resulting queues, this area has a very poor safety record and holds one of the highest collision rates across the National Highways network."
"Their improvements will reduce delays, smooth traffic flow and create safer journeys for all."
The ongoing works at junction 10 are due for completion in spring 2026.
This has included several bridge demolitions and the building of new ones crossing the A3 and M25, connecting the four quadrants surrounding junction 10 for the first time.
Environmental improvements are also being made to the area including the restoration of heathland and planting of new trees and woodland.
A3 CLOSURE DIVERSIONS:
National Highways have put a number of diversion routes in place ahead of the A3 closure this weekend.
Southbound A3 main diversion:
you'll take the eastbound (anticlockwise) M25 to junction 9
travel south on the A243, then join the southbound A24, the westbound A246 and the northbound A247
re-join the southbound A3 at the Burnt Common interchange
Southbound A3 non-motorway diversion:
take the northbound A3
then take the eastbound A245, the northbound A307, the eastbound A309 and the southbound A243
join the southbound A24, then take the westbound A246 and the northbound A247
re-join the southbound A3 at the Burnt Common interchange
Northbound A3 main diversion:
take the B2215 off the A3
then travel south on the A247, east on the A246, north on the A24 and north on the A243
join the westbound (clockwise) M25 at junction 9
re-join the northbound A3 at junction 10
Northbound A3 non-motorway diversion:
take the B2215 off the A3
then travel south on the A247, east on the A246, north on the A24 and north on the A243
then travel west on the A309, south on the A307 and west on the A245
re-join the northbound A3 at the A245 Painshill junction
