M25 Junction 15 and 11 closures planned this month

Summarised from 2 outlets · 3 reports · Updated 9 Oct, 06:49 · Archive

National Highways and Surrey County Council are closing two M25 junctions for overnight works this month.

National Highways and Surrey County Council are carrying out major works at two M25 junctions in Surrey this month, with both requiring overnight closures and diversions.

Junction 15, known as the Thorney Interchange, connects the M25 to the M4 and is frequently used by drivers heading to Heathrow Airport, Reading and West London. The anticlockwise carriageway will close from 8pm on Saturday 17 October to 10am on Sunday 18 October, and again from 8pm on 24 October to 10am on 25 October. National Highways is carrying out preparatory work to replace bridge expansion joints, with the full replacement work scheduled to begin in January and be completed by spring next year. The clockwise carriageway and all links between the M25 and M4 will remain open.

At Junction 11 near Chertsey, the clockwise exit slip road (Gatwick to Heathrow direction) will shut from 11pm on Friday 9 October to 5am on Monday 12 October. This closure is part of a wider improvement project by Surrey County Council, which includes widening northbound and southbound exit slip roads to provide dedicated left-turn lanes, enlarging the roundabout, resurfacing, upgrading drainage, and improving traffic signals and street lighting. Further lane closures will be needed in the coming months to complete the work.

Natalie Bramhall, Surrey County Council's Cabinet Member for Property, Waste and Infrastructure, said the junction 11 upgrade will 'increase capacity and improve traffic flows, particularly at peak times'. She thanked drivers 'in advance for their patience'. Diversion routes will be in place at both junctions, and National Highways has asked the public to plan ahead and consider alternative routes or modes of transport such as trains.

M25 Junction 15 and 11 closures planned this month — Image: BBC Surrey

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How it is being reported

Drivers face M25 diversion for second weekendTraffic is being diverted at the M25 junction 11 near Chertsey as part of wider improvement works.BBC Surrey · 9 Oct, 06:16
Another Surrey M25 closure coming up as drivers warned of diversion routeDrivers will need to go the long way round when leaving the M25Surrey Live · 8 Oct, 07:00
Major M25 junction closure later this month as diversion route shared with Surrey driversThe major junction will close twice overnight on separate weekends this monthSurrey Live · 7 Oct, 07:00

In this story: M25 · Junction 15 · Junction 11 · Chertsey · National Highways · Surrey County Council · Natalie Bramhall

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