By Christian Fuller & Emily Coady-StempBBC Information, South East17 March 2024, 08:26 GMTUpdated 3 hours agoImage supply, Nationwide Highways: South-EastImage caption, Groups, seen right here lifting a gantry into place, have labored by means of the evening to finish the work on timeWork on the M25 in Surrey is “on schedule” for completion earlier than rush hour begins on Monday.The “unprecedented” daytime closure of one of many nation’s busiest stretches got here into drive at 21:00 GMT on Friday.A diversion is in place whereas a five-mile stretch is closed, with the motorway because of reopen absolutely at 06:00 on Monday.Nationwide Highways mentioned “good progress” had been made demolishing a bridge and putting in a brand new gantry.The closure is alongside each carriageways between junctions 10 and 11, with individuals informed to solely use the M25 if “completely mandatory”.Surrey Highways mentioned diversion roads have been dealing with the influence of the closure, however there have been pockets of congestion close to Byfleet and Addlestone.Earlier, there have been experiences of congestion on each the A3 and the M25 on the method to the closure.In the meantime, gradual visitors was reported on the A245 on the diversion route. The street had been partially blocked in each instructions because of an earlier accident.Heathrow ExpressTravellers affected might embrace individuals going to Gatwick and Heathrow Airports and the Channel ports.There have been delays and cancellations of as much as quarter-hour on Heathrow Categorical trains out of London earlier, because of engineering works not ending on time.Picture supply, Getty ImagesImage caption, The closure is alongside each carriageways between junctions 10 and 11On Saturday, there have been two-mile queues of visitors main as much as the closed part and Surrey Highways reported delays on the diversion route between Byfleet and Painshill.It’s the first time there was a scheduled daytime closure of all lanes on the M25 because it opened in 1986.Nationwide Highways mentioned the carriageway between junctions 9 and 11 usually carried between 4,000 and 6,000 autos per hour in every path throughout peak occasions on the weekend.Junction 10 is the busiest part of the M25 with greater than 300,000 autos passing by means of every day.As such, any overrun of the work might trigger big disruption on Monday.However Nationwide Highways South East mentioned on X, previously Twitter, that the challenge remained “on schedule”.The closure would be the first of 5 between now and September as a part of a £317m improve, with the following due in April.Nationwide Highways beforehand mentioned it was not but at a stage the place it might launch actual dates in regards to the different closures.Observe BBC South East on Fb, on X, and on Instagram. Ship your story concepts to southeasttoday@bbc.co.uk or WhatsApp us on 08081 002250.