Drivers might feel angry about the road closure over the weekend as a section of the M25 is going to be closed in both directions.
National Highways has advised drivers to only travel if it's really necessary when they shut down the motorway between junctions 10 (A3 Wisley) and 11 (A320 Chertsey Interchange) in Surrey.
A five-mile section of road will be shut from 9pm on Friday until 6am next Monday (March 18).
Around 200,000 vehicles will be affected, including people going to concerts, sports events, and holidaymakers going in and out of London.
The M25 is a popular route for traveling to and from Heathrow and Gatwick Airports as well as the Channel Ports.
From 10am to 9pm between junctions 9 and 11, the M25 carries between 4,000 and 6,000 vehicles in each direction every hour.
Engineers will demolish the Clearmount Bridleway bridge and install a large gantry.
The weekend works are part of a £317,000,000 project to 'reduce congestion, improve safety and create more reliable journeys' by restoring heathland and upgrading the junction with the A3 Winsley Interchange, highway officials say.
However, National Highways says there will be local diversion routes in place for those who need to travel this weekend.
For junctions 10 and 11: 'Northbound A3 to Painshill Junction, A245 towards Woking, and then A320 to M25 Junction 11.'
Another alternative route for between junctions 11 and 10: 'A320 south towards Woking, A245 towards Byfleet and Painshill junction, Southbound A3 to Junction 10.
'Taking the M25 in the other direction to avoid our closure is also an option.
'If you do travel, please allow a lot of extra time for your journey,'
Four more closures will take place up to September when the works are set to be completed.
The highway officials have not disclosed when these will occur although the next one is anticipated in April.
Project lead Jonathan Wade said: 'Drivers should only use the M25 if their journey is absolutely necessary.
'This is the first of five full closures of one of the busiest junctions on our road network.
We have spent months planning for these closures and making sure there are diversion routes in place, but there will still be heavy congestion and delays.
These improvements will bring long-term benefits to drivers who pass through this stretch of the M25, as well as pedestrians, cyclists, and horse riders in the area.'
Steve Gooding, director of motoring research charity the RAC Foundation, added: 'For drivers who've already had their patience tried by the queues at the junction 10 works, the phrase 'you ain't seen nothing yet' springs to mind.
'National Highways' request for people to avoid driving in the area applies not only to trips on the M25 but also to those on nearby local roads where M25 traffic will be diverted.
‘It is important to hope that drivers will be very careful, no matter how frustrating the delays and disruption may be.
‘We definitely do not want any collisions or accidents, even if they are small, because even the smallest mistake will make the misery worse.’
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