Planned roadworks in and around the M25: weekly summary for Monday 13 March to Sunday 19 March 2017
Summary of planned new and ongoing road improvements over the coming week.
The following summary of planned new and ongoing road improvements over the coming week is correct as of 10 March 2017 but could be subject to change due to weather conditions or unforeseen circumstances. All our improvement work is carried out with the aim of causing as little disruption as possible.
M1 junction 6a (M25), Hertfordshire: survey and electrical repairs
Work to improve safety by carrying out surveys and electrical repairs will start this week. The southbound link roads to the M25 will be closed overnight, between 10pm and 5am, on Thursday 16 March. A clearly signed diversion will be in place via the M1 junction 6, A405 eastbound and the A41 northbound to join at junction 20.
M3 junctions 2 (M25) to 4a Farnborough, Hampshire: smart motorway improvement
Work to reduce congestion and improve journey times continues this week between junctions 2 and 4a with narrow lanes and a 50mph speed limit in place on both carriageways, with a free recovery service operating 24 hours a day.
The northbound carriageway between junctions 5 and 2 will be closed overnight, between 8pm and 5.30am, on Monday 13 March. A clearly signed diversion will be in place via the A287, A30 and M25.
The southbound carriageway between junctions 2 and 4a will be closed overnight, between 8pm and 5.30am, from Monday 13 March for three nights and overnight, between 8pm and 7am, on Friday 17 March. A clearly signed diversion will be in place via the M25, A30 and A327.
The northbound carriageway between junction 4a and 2 will be closed overnight, between 8pm and 5.30am, from Tuesday 14 March for two nights and overnight, between 8pm and 7am, on Friday 17 March. A clearly signed diversion will be in place via the A327, A30 and M25.
Both carriageways will be closed between junction 2 and 3 overnight, between 8pm and 5.30am, on Thursday 16 March 2017. A clearly signed diversion will be in place via the M25, A30 and A322.
The northbound carriageway between junctions 4a and 4 will be closed overnight, between 8pm and 5.30am, on Thursday 16 March 2017. A clearly signed diversion will be in place via the A327, A30 and A331.
The southbound carriageway between junctions 4 and 5 will be closed overnight, between 8pm and 5.30am, on Thursday 16 March. A clearly signed diversion will be in place via the A331, A30 and A287.
The southbound M3 link road to the clockwise and anti-clockwise M25 will be closed overnight, between 8pm and 7am, on Saturday 18 March and overnight, between 10pm and 5.30am, on Sunday 19 March. A clearly signed diversion will be in place via the M3 junction 3.
The scheme is due to be completed in June 2017. For further information visit the scheme website.
M4 junctions 3 (A312) to 1 Chiswick, West London: electrical installation
Work to improve safety by carrying out electrical installation will start this week. The eastbound carriageway, including Heston Services and junction 2, will be closed overnight, between 10pm and 5.30am, from Monday 13 March for 5 nights. Work on Friday will start at 11pm. A clearly signed diversion will be in place via the A312 and A4.
The westbound carriageway, including Heston Services and junction 2, will be closed overnight, between midnight and 5.30am, from Monday 13 March for five nights. A clearly signed diversion will be in place via the A4 and A312.
M20 junction 3 (M26), Kent: surveys
Work to maintain safety by carrying out surveys will start this week. The M20 westbound link road to the M26 will be closed overnight, between 10pm and 5.30am, from Monday 13 March for three nights. A clearly signed diversion will be in place via the M20 and M25.
M25 junction 9 Leatherhead, Surrey: drainage inspections
Work to maintain safety by carrying out drainage inspections and repairs will continue this week. The anti-clockwise entry and exit slip roads will be closed overnight, between 10pm and 5am, on Wednesday 15 March for two nights. A clearly signed diversion for the entry slip road will be in place via the M25 clockwise to junction 10 and return. A clearly signed diversion for the exit slip road will be in place via junction 8 and return.
M25 junction 10 (A3), Surrey: carriageway repairs
Work to improve journeys by carrying out carriageway repairs will start this week. The anti-clockwise carriageway will be closed overnight, between 10pm and 5.30am, from Monday 13 March for five nights. Work on Friday will start at 11pm. A clearly signed diversion will be in place via the exit and entry slip roads.
M25 junctions 10 (A3) to 11 Chertsey, Surrey: bridge joint replacement
Work to improve journeys by carrying out bridge joint replacement on the structure that carries the M25 over the River Wey and the South West Trains railway line continues this week. The clockwise carriageway and junction 10 entry slip road will be closed overnight, between 9pm and 8am, on Saturday 18 March. A clearly signed diversion will be in place via the A3, A245, A320 and A317 to junction 11.
M25 junction 12 (M3), Surrey: smart motorway improvement
Work to improve journeys by carrying out smart motorway improvement continues this week. The dedicated link roads from the M25 in both directions to the M3 southbound will be closed overnight, between 8pm and 5.30am, from Monday 13 March for five nights. On Friday night the work will take place between 8pm and 7am. A clearly signed diversion will be in place via M25 junction 13, A30 and the A327 to M3 junction 4a.
M25 junction 14 and Terminal 5 spur road, Heathrow, Greater London: maintenance and inspections
Work to maintain safety by carrying out maintenance and inspections will start this week. The anti-clockwise exit slip road and the Terminal 5 entry link road will be closed overnight, between 10pm and 5am, on Sunday 19 March. A clearly signed diversion will be in place via the M25 clockwise to junction 15, M4 westbound to junction 5 and return.
M25 junction 18 Chorleywood, Hertfordshire: electrical repairs
Work to maintain safety by carrying out electrical repairs will start this week. The clockwise exit slip road will be closed overnight, between 10pm and 5am, on Thursday 16 March. A clearly signed diversion will be in place via junction 19 and return.
M25 junction 21a St Albans to junction 20 Hemel Hempstead, Hertfordshire: surveys
Work to maintain safety by carrying out surveys will start this week. The anti-clockwise carriageway, including junction 21a entry slip road and M1 link roads, will be closed overnight, between 10pm and 5am, on Thursday 16 March. A clearly signed diversion will be in place via the A405 westbound, A41 northbound to rejoin at junction 20.
M25 junctions 25 Enfield, Greater London: tunnel maintenance
Work to maintain safety by carrying out routine tunnel maintenance work will start this week. The clockwise entry slip road will be closed overnight, between 10pm and 5am, from Wednesday 15 March for four nights. Work on Friday will start at 11pm. A clearly signed diversion will be in place via M25 anti-clockwise to junction 24 and return.
M25 junction 26 Waltham Abbey, Essex: electrical repairs
Work to maintain safety by carrying out electrical repairs will start this week. The anti-clockwise entry slip road will be closed overnight, between 10pm and 5am, on Wednesday 15 March. A clearly signed diversion will be in place via the M25 clockwise to junction 28 and return.
M25 junction 31 Lakeside, Essex: barrier repairs and street lighting
Work to maintain safety by carrying out barrier repairs and street lighting maintenance will continue this week. The anti-clockwise carriageway will be closed overnight, between 10pm and 5.30am, on Tuesday 14 March. A clearly signed diversion will be in place via the junction 31 link road to junction 30.
The anti-clockwise exit slip road will be closed overnight, between 10pm and 6am, on Saturday 18 March. A clearly signed diversion will be in place via junction 30.
M26 junction 2a (M20), Kent: surveys
Work to maintain safety by carrying out surveys will start this week. The M26 eastbound link road to M20 will be closed overnight, between 10pm and 5.30am, from Wednesday 15 March for three nights. Work on Friday night will start at 11pm. A clearly signed diversion will be in place via the M26 junction 2a, A20 and A228.
A1(M) junction 4 Hertford, Hertfordshire: electrical repairs
Work to maintain safety by carrying out electrical repairs will start this week. The northbound entry slip road will be closed overnight, between 10pm and 5am, on Monday 13 March. A clearly signed diversion will be in place via the A1(M) southbound to junction 3 and return.
A2 Dartford Heath, Kent: electrical repairs
Work to improve safety by carrying out electrical repairs will start this week. The eastbound entry slip road will be closed overnight, between 10pm and 5am, from Tuesday 14 March for two nights. A clearly signed diversion will be in place via the A2 westbound to Black Prince interchange (A223) and return.
A3 Ockham, Surrey: litter clearance
Work to improve journeys by carrying out litter clearance will start this week. The northbound entry slip road will be closed overnight, between 11pm and 5am, on Friday 17 March. A clearly signed diversion will be in place via Forest Road, Horsley Road, Downside Road, Bridge Road and the A245 to Painshill.
A3 Painshill, Surrey: emergency repairs
Work to improve journeys and safety by carrying out emergency repairs will start this week. The northbound exit slip road will have one lane closed 24/7 from Monday 13 March for four days to allow Surrey County Council to undertake repairs on the A245.
A13 Mardyke viaduct link road, Thurrock: technology installation
Work to maintain safety by carrying out technology installation will start this week. The clockwise link road between junction 30 and 31 of the M25 will be closed overnight, between 10pm and 5.30am, on Wednesday 15 March. A clearly signed diversion will be in place via the A13 westbound to Wennington junction, and the A1306 to M25 junction 31.
A13 North Stifford to M25 junction 30, Essex: resurfacing
Work to improve journeys by carrying out resurfacing will start this week. The westbound carriageway will be closed overnight, between 10pm and 5.30am, on Thursday 16 March. A clearly signed diversion will be in place via the A1012 and A1306 to M25 junction 31.
A282 junction 1a Swanscombe, Kent: tunnel maintenance
Work to maintain safety by carrying out tunnel maintenance will continue this week. The northbound entry slip road will be closed overnight, between 8.30pm and 5.30am, from Saturday 18 March for two nights. A clearly signed diversion will be in place via the A282 southbound to junction 1b and return.
A282 (M25) Dartford – Thurrock Crossing: routine maintenance
Work to improve journeys by carrying out routine maintenance at the Dartford Crossing continues this week. The following closures will be in place overnight, between 9pm and 5.30am, with fully signed diversions in place during the northbound east tunnel closures for oversized vehicles.
- Monday 13 March: northbound east tunnel
- Tuesday 14 March: northbound east tunnel
- Wednesday 15 March: northbound east tunnel
- Thursday 16 March: northbound east tunnel
- Friday 17 March: northbound east tunnel
- Saturday 18 March: northbound west tunnel
- Sunday 19 March: northbound west tunnel
The QEII Bridge will have three (of four) lanes closed overnight, between 10pm and 5.30am, on Monday 13 March.
Safety at roadworks
Highways England is working with the industry and road users to reduce the risks of working on the roads. For the safety of road workers and all road users, when you are approaching roadworks:
- keep within the speed limit – it is there for your safety
- get into the correct lane in good time – don’t keep switching
- concentrate on the road ahead, not the roadworks
- be alert for works’ traffic leaving or entering roadworks
- keep a safe distance – there could be queues in front
- observe all signs – they are there to help you
- be alert for road workers, the roads are their workplace
General enquiries
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Media enquiries
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.