Dartford – Thurrock maintenance

The Dartford Crossing, also known as the A282, connects directly at both ends with the M25 London Orbital Motorway, one of the busiest motorways in Europe. Carrying over 50 million vehicles a year, the Dartford Crossing is designed to handle 135,000 vehicles a day, but the average is now 150,000 a day – with the busiest days seeing up to 180,000 vehicles using it. We’re carrying out an extensive programme of repairs and maintenance work over the next several years to keep journeys safe and reliable for road users. To keep disruption to a minimum, we carry out our work overnight, typically between the hours of 10pm and 6am.

Latest updates

  • 23 May 2024

    Overnight east tunnel closures scheduled throughout June 2024

    We’ll be carrying out repairs to some key electrical components in the east tunnel, as well as planned maintenance to a bridge at A282 junction 1b throughout June.

    To work in both areas safely, the A282 northbound carriageway (between M25 junction 2 and A282 junction 1a) and the Dartford east tunnel are scheduled to close overnight on weeknights between Monday 3 June and Friday 21 June.

    Weeknight closures of the Dartford east tunnel will then continue for one additional week between Monday 24 June and Friday 28 June.

    Closure information (Monday 3 June to Friday 21 June)

    Dartford east tunnel:

    • between 9pm and 5:30am Mondays to Thursdays
    • between 9:30pm and 6am on Fridays

    M25 junction 2 to A282 junction 1a (northbound)

    • between 10pm and 5:30am Mondays to Thursdays
    • between 11pm and 6am on Fridays

    Diversion information

    A clearly signed diversion for northbound traffic will be in place via the A2 eastbound, B255 northbound and the A206 westbound, returning to A282 junction 1a where access to the west tunnel will be available via the northbound entry slip road.

    Closure information (Monday 24 June to Friday 28 June)

    • between 9pm and 5:30am Mondays to Thursdays
    • between 9:30pm and 6am on Fridays


    During these works, the adjacent Dartford west tunnel will remain open overnight for vehicles less than 4.8m (15’-9”) high. Vehicles between 4.8m (15’-9”) and 5.0m (16’-6”) high will be diverted via the M25 clockwise.

    Weekly tunnel safety inspections will continue overnight on weekends as usual.

    Important information for drivers of goods vehicles and high-sided vehicles is available here.

  • 17 May 2024

    Reminder: overnight QEII Bridge closure scheduled this weekend

    The QEII Bridge is scheduled to close overnight this weekend between 10pm Saturday 18 May until 5am on Sunday 19 May for routine bridge safety inspections and general maintenance.

    A contraflow diversion for southbound traffic will be in place via the east tunnel. The west tunnel will remain open for northbound traffic.

    Due to the contraflow diversion, please note that a height restriction will be in place for northbound traffic which applies to vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high.

  • 25 April 2024

    Overnight east tunnel closures scheduled 7, 8 and 9 May

    Work within the west tunnel is currently continuing overnight during the week.

    We’ll need three overnight closures of the east tunnel on Tuesday 7, Wednesday 8 and Thursday 9 May to undertake electrical works. The west tunnel will remain open during these three nights for northbound journeys.

    After this, we’ll be standing down our work for the following three nights on Friday 10, Saturday 11 and Sunday 12 May. This is to help facilitate smoother journeys during the next M25 junction 10 weekend closure.

    Following this, work is scheduled to resume in the west tunnel during the week until June 2024.

    Please be reminded that the west tunnel has a different height restriction (4.8m) to the east tunnel (5.0m). If you're travelling in a high-sided vehicle, please see the project information tab for more information.

  • 17 April 2024

    Resurfacing update

    Our nearby resurfacing work on the M25 anti-clockwise carriageway, from junction 30 to junction 29, is now complete. We therefore won’t require our contingency bookings on Wednesday 17 and Friday 19 April which included a closure of the Dartford east tunnel.

    We will require one shift, on Thursday 18 April to undertake technology work on the A282 northbound carriageway underneath junction 1a, which will necessitate a closure of the Dartford east tunnel.

    Please see here for the upcoming closures scheduled at the Dartford Crossing.

  • 04 April 2024

    Monday 8 April to Wednesday 17 April, overnight east-bore tunnel closures

    The east-bore tunnel is now scheduled to close from 10pm until 5:30am on weeknights between:

    • Monday 8 and Friday 12 April
    • Monday 15 and Wednesday 17 April

    The west-bore tunnel, which was previously scheduled to close overnight on these dates, will remain open. This change has been made to allow nearby resurfacing work to be completed safely on the M25 anti-clockwise carriageway between junction 30 and junction 29.

    Three extra closures have been booked as a contingency measure in case weather conditions are unsuitable for resurfacing work. Should work be completed as planned, these extra shifts won’t be required and the closures will not be implemented:

    • Contingency bookings - Wednesday 17, Thursday 18 and Friday 19 April

    As usual, our routine tunnel safety inspections will continue on weekends:

    • West-bore tunnel closure, 10pm to 5am Saturdays (excluding Saturday 6 April due to an overnight closure of the QEII bridge)
    • East-bore tunnel closure, 10pm to 5am on Sundays (no access for vehicles over 4.8m)

    Reminder: Our next full closure of the QEII bridge is scheduled for this weekend, with the bridge closed between 10pm on Saturday 6 April and 5am on Sunday 7 April for routine safety inspections and maintenance.

    Please note, that while we have carefully planned and coordinated this work, there may be some changes in the event of adverse weather conditions, or any other unplanned events. To check live traffic conditions on the strategic road network, please visit the Traffic England website. Further information about scheduled roadworks and events in the Southeast can be found @HighwaysSEAST or via the daily road closure report.

  • 28 March 2024

    Overnight closures planned for next week

    In order to help keep journeys moving smoothly over the Easter bank holiday, no closures are scheduled at the Dartford Crossing this weekend.

    Overnight closures of the west-bore tunnel will be in place next week from Wednesday 3 April. Reminder: our next full overnight closure of the QEII bridge is scheduled next weekend on Saturday 6 April.

    Dartford Crossing scheduled closures:

    • Thursday 28 March to Tuesday 2 April; no planned closures
    • Wednesday 3 and Thursday 4 April; west tunnel closure, 10pm to 5:30am

    The east-bore tunnel will remain open for northbound traffic

    • Saturday 6 April; QEII Bridge closure, 10pm to 5am

    A contraflow diversion for southbound traffic will be in place via the east-bore tunnel

    The west-bore tunnel will remain open for northbound journeys. Vehicles between 4.8m and 5.0m in height travelling northbound will be diverted via the M25 clockwise

    • Sunday 7 April; east tunnel closure, 10pm to 5am

    As usual, we’ll undertake our weekly safety checks in the east-bore tunnel on Sunday night.

    Vehicles up to 4.8m in height will be diverted through the west-bore tunnel

    Vehicles between 4.8m and 5.0m in height will be diverted via the M25 clockwise.

  • 28 February 2024

    Overnight west-bore tunnel closures scheduled from Monday 4 March

    Regular overnight closures of the east-bore tunnel, which have been in place during the week throughout February 2024, are due to finish on Friday 1 March 2024.

    On Saturday 2 and Sunday 3 March, we’ll undertake our usual weekend routine tunnel safety inspections between 10pm and 5am in the west-bore tunnel and east-bore tunnel respectively.

    Between Monday 4 March and June 2024, the west-bore tunnel is scheduled to close regularly overnight during the week between 10pm and 5:30am. We'll be carrying out repairs to some essential hardware in the tunnel, such as fans and electronic signs. The adjacent east-bore tunnel will remain open overnight for northbound journeys.

    Routine tunnel safety inspections will continue to take place on weekends and our next full closure of the QEII bridge is scheduled between 10pm on Saturday 6 April and 5am on Sunday 7 April 2024.

  • 25 January 2024

    Reminder: overnight east-bore tunnel closures scheduled between Monday 5 February and 1 March 2024

    Since last Summer we’ve been working in the west-bore tunnel at night during the week. Recent work has included repairs to the tunnel’s ventilation systems, drainage, steelwork and pipework, cabinets, railings and electrical equipment, and the re-waterproofing of the carriageway as it runs through the tunnel.

    Between Monday 5 February and Friday 1 March, work will move over into the east-bore tunnel, where we’ll be carrying out essential CCTV upgrades. Both tunnels have CCTV systems that are monitored 24 hours a day, 365 days a year by our dedicated crossing control teams to keep road users safe and on the move.

    To undertake this work safely, the following overnight closures are scheduled between 10pm and 5.30am during the week. We’ll continue to undertake routine tunnel safety inspections and general maintenance on Saturday and Sunday nights.

    • Overnight closures of the east-bore tunnel are scheduled between 10pm and 5.30am from Monday to Fridays
    • Overnight closure of the west-bore tunnel are scheduled between 10pm and 5am on Saturdays
    • Overnight closures of the east-bore tunnel are scheduled between 10pm and 5am on Sunday

    Please note: the west-bore tunnel will not close on Saturday 24 February due to our next planned closure of the QEII Bridge, which is scheduled between 10pm on Saturday 24 February and 5am on Sunday 25 February for routine safety inspections. The west-bore tunnel will remain open for northbound traffic and a contraflow diversion will be installed through the east-bore tunnel to allow southbound traffic to continue to cross from Essex to Kent.

  • 12 January 2024

    Scheduled overnight west tunnel closures, QEII bridge closure, and emergency barrier repair in January 2024

    Following a busy festive period, regular overnight closures of the west-bore tunnel have now resumed which will be in place in throughout January 2024.

    We're replacing some key equipment in the west-bore tunnel which forms part of the tunnel’s ventilation system, and some of the panels which line the tunnel. We’ll also be testing equipment in other areas of the tunnel.

    To safely carry out this work, the west-bore tunnel is scheduled to close overnight during the week and on Saturday nights between 10pm and 5am, until Sunday 4 February 2024. A diversion will be in place each night via the adjacent east-bore tunnel.

    There are some nights where different parts of the crossing are scheduled to close, and the west tunnel will remain open:

    • On Sunday nights, the east-bore tunnel is scheduled to close between 10:30pm and 5:30am for routine safety checks and maintenance. A diversion will be in place via the adjacent west-bore tunnel.

    If you’re travelling northbound on a Sunday night towards the tunnels, please note that height restrictions will be in place, which applies to vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high.

    • The QEII bridge is scheduled to close between 10pm on Saturday 13 and 5am on Sunday 14 January 2024 for planned routine safety checks and bridge maintenance. A contraflow diversion for southbound traffic will be in place via the east-bore tunnel. The west tunnel will remain open for northbound traffic.

    Due to the contraflow diversion, please note that a height restriction will be in place for northbound traffic which applies to vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high.

    We’ll also need to carry out emergency barrier repairs on the A282 northbound carriageway this weekend. To carry out this work safely, the northbound carriageway will be closed overnight between junction 2 and junction 1a from 10:30pm on Sunday 14 January until 5am on Monday 15 January.

    A clearly signed diversion will be in place via the A2 eastbound, B255 northbound and the A206 westbound, to re-join the A282 at junction 1a.

    Scheduled overnight east-bore tunnel closures – Monday 5 February to March 2024

    Between Monday 5 February and early March 2024, we'll be continuing our work to upgrade the CCTV systems in the east-bore tunnel. The CCTV is monitored 24 hours a day, 365 days a year by our dedicated teams to help keep journeys at the crossing safe and reliable. To safely carry out this work, the east-bore tunnel is scheduled to close overnight during the week and on Sunday nights, between 10pm and 5am.

    Please note that a height restriction will be in place for northbound traffic which applies to vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high.

    There are some nights where different closures will be in place and so the east tunnel remain open:

    On Saturday nights, the west-bore tunnel is scheduled to close between 10pm and 5am for routine safety checks and maintenance. A diversion will be in place via the adjacent east-bore tunnel.

    Looking further ahead

    Work is scheduled to resume in the west-bore tunnel again from early March 2023, however, please check back here for updates.

  • 30 November 2023

    Planned works for the remainder of 2023

    Following a pause in our work to help improve journeys for freight partners during a busy Black Friday and Cyber Monday period, our overnight works are due to resume.

    We’ll start back in the west bore tunnel during weeknights and Saturday nights, between Saturday 2 December and Monday 18 December 2023.

    We’ll be working to replace some of the older electrical cables during the week, and carrying out routine safety checks and maintenance on Saturday nights to keep journeys safe and reliable.

    An overnight closure of the east bore tunnel will then be in place on Sunday nights to allow for routine safety checks and tunnel maintenance.

    We'll then pause our planned works between Monday 18 December and the New Year to help keep journeys moving over the festive period. Our overnight work in the west bore tunnel is scheduled to resume from Tuesday 2 January 2024.

    Head down to the 'upcoming closures' section for further details on our closures over the next two weeks.

  • 22 November 2023

    Upcoming closures and works pause for Black Friday and Cyber Monday

    As well as serving more than 100,000 customer journeys each day, the Dartford Crossing plays an important role in keeping goods and services moving across the country, linking key distribution centre's and ports in the south east and further afield. We’re standing down our work over the Black Friday and Cyber Monday weekend, to help smooth journeys for our freight and transportation partners during this busier period.

    Our work in both tunnels and on the QEII bridge will be lifted between Sunday 26 November and Friday 1 December. Until then, we'll continue our maintenance and repair work in the west tunnel overnight.

    We’ll also be carrying out routine safety inspections and bridge maintenance on the QEII Bridge this weekend.
    To keep our teams and road users safe, the QEII Bridge is scheduled to close from 10pm on Saturday 25 November until 5am on Sunday 26 November 2023. We'll also be using the closure to carry out some additional resurfacing work within lanes 1, 2 and 3 to help keep journeys safe.

    Please head down to the 'upcoming closures' section of this page for more information on these planned closures, including diversion routes.

  • 26 October 2023

    Tunnel maintenance and planned QEII bridge closure

    We’re continuing with our tunnel maintenance work which is expected to last until the end of the year.

    We’re carrying out routine repairs to various components such as the steelwork, drainage and electrical equipment to keep journeys safe and reliable.

    Our next full closure of the QEII bridge is planned between 10pm on Saturday 25 and 5am on Sunday 26 November 2023.

    Please see below full closure information below.

  • 18 October 2023

    Changes to planned overnight closures

    We’ve decided to postpone our planned waterproofing and resurfacing work around the Dartford Crossing until Spring next year when the weather conditions are better.

    There have been some changes to the extended closures we had planned for this month.

    We will no longer need to close the east tunnel through to the M25 northbound carriageway (junction 31 to 30) on Saturday 21 and Saturday 28 October 2023.

    Instead, we will be closing the west tunnel to continue with our routine safety inspections and maintenance work.

    Please see full closure information below

  • 12 October 2023

    West tunnel closures and planned QEII bridge closure

    We’re continuing our weeknight maintenance work in the west tunnel which is expected to last until the end of the year. At the same time, we’re carrying out repairs to the steelwork, drainage and electrical equipment to help keep journeys safe and reliable.

    We’re also planning to close the QEII bridge between 10pm on Saturday 14 and 5am on Sunday 15 October 2023.

    This is for routine safety inspections and maintenance work.

    We’ll then do our weekly safety checks in the east tunnel from 10pm on Sunday 15 until 5am on Monday 16 October.

    Please see full closure information below

  • 15 September 2023

    M25 junction 31 waterproofing and A282 bridge painting

    M25 junction 31 carriageway waterproofing

    We need to re-waterproof a section of the northbound M25 carriageway where it crosses above the Purfleet Interchange at junction 31.

    Because the new materials need extra time to set before we can reopen the road safely, we’ll do this work over extended closures on Saturday nights when traffic levels are at their lowest.

    Please see full closure information below

    Due to the location of this work, we’ll need to close the east tunnel and lane two through the west tunnel to safely divert traffic at M25 junction 31, where work will be taking place under a full closure of the northbound carriageway between junctions 31 and 30.

    A clearly signed diversion will be in place via the M25 junction 31 Purfleet Interchange and the dedicated northbound linking road to re-join the M25 at junction 30.

    A282 junction 1b bridge painting

    We’re also nearing the completion of our repainting work on the bridge which carries the A226 over the A282 between junctions 1a and 1b. This protects the steelwork from corrosion and increases the lifespan of the bridge.

    We’ll need to close the northbound carriageway between the M25 junction 2 and A282 junction 1a overnight to carry out this work safely from Monday 2 October for five nights.

    Please see full closure information below

    The west tunnel will remain open via the A282 junction 1a northbound entry slip road, however, due to the location of this work, overnight access to the east tunnel will be unavailable on these dates.

Project information

Upcoming closures

Closures night by night from Thursday 23 May until Friday 7 June

All dates inclusive

  • Monday 20 May to Thursday 23 May: west tunnel closure, 10pm until 5.30am
  • Friday 24 May: west tunnel closure, 11pm to 6am
  • Saturday 25 May: west tunnel closure, 10pm to 5am
  • Sunday 26 May: east tunnel closure, 10pm to 5am (no access for vehicles over 4.8m)
  • Monday 27 May: no planned closures
  • Tuesday 28 May to Thursday 30 May: west tunnel closure, 10pm until 5.30am
  • Friday 31 May: west tunnel closure, 11pm to 6am
  • Saturday 1 June: west tunnel closure, 10pm to 5am
  • Sunday 2 June: east tunnel closure, 10pm to 5am (no access for vehicles over 4.8m)
  • Monday 3 June to Thursday 6 June: Dartford east tunnel (no access for vehicles over 4.8m), 9pm to 5:30am. M25 junction 2 to A282 junction 1a (northbound), 10pm to 5:30am
  • Friday 7 June: Dartford east tunnel (no access for vehicles over 4.8m), 9:30pm to 6am. M25 junction 2 to A282 junction 1a (northbound), 11pm to 6am

Dartford Crossing diversions

  • East tunnel – vehicles less than 4.8m (15‘-9”) high will be diverted via the west tunnel. Vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high will be diverted via M25 clockwise.
  • West tunnel – drivers will be diverted via the east tunnel. 
  • QEII bridge diversion – southbound traffic will be diverted via the east tunnel. Vehicles less than 4.8m (15‘-9”) high travelling northbound will be able to use the west tunnel as usual and for vehicles between 4.8m (15‘-9”) and 5.0m (16’-6”) high, an alternative diversion will be in place via the M25 clockwise. 

The Dartford Crossing is currently the only way to cross the Thames east of London by road and links the counties of Essex and Kent via the QEII bridge for southbound traffic and two 1.4km-long tunnels for northbound journeys. 

The A282 also connects directly at both ends with the M25 London Orbital Motorway, one of the busiest motorways in Europe.

To keep this part of the network safe and secure, our work will include:

  • Upgrading CCTV and lighting
  • Waterproofing
  • Maintaining ventilation, electrical and drainage systems
  • Replacing tunnel bearings and repairing the concrete tunnel walkways 
  • Replacing expansion joints on the viaduct
  • Replacing the panels which form the tunnel linings
  • Carrying out maintenance to the QEII bridge pylons, cable stays and dampers

Additional work will also include:

  • Replacing areas of corroded steelwork
  • Tile repairs
  • Paintwork

We’ll do most of our work overnight to keep disruption to a minimum and planned our work so that multiple schemes can run at the same time. 

Documents

Traffic information

Information about scheduled roadworks and events on our motorways and major roads.

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