South East - Maintenance schemes

Maintenance schemes taking place in the South East region.

Project information

Ash Dieback works in the South East

Find out where we're taking action to remove or make safe trees affected by Ash Dieback.

We've found large numbers of dead or dying Ash trees. These are a potential safety risk to people on or near our road network.

We need to remove or make safe ash trees identified as needing urgent action.

Closures

While we work, we'll need overnight closures at these locations.

Unless we give other times, closures are 8pm - 6am.

20 to 25 October (9pm to 6am)

A31 both directions Lake Gates to Merley

27 to 28 October (8pm to 6am)

Local road closed off A21 at B2079 junction

27 October to 30 October (9pm to 6am)

Southbound exit slip closure

Diversion route:

  • A3 southbound to Thursley and return on A3 northbound
30 October to 6 November

A31 both directions between Merley and Canford

Diversion route:

  • A349
  • A341
  • A348
  • B3073
  • then back to A31
5 to 12 November - M3 southbound junction 8 exit slip to A303

Diversion is by the southbound M3 to junction 9. Then take the A34 northbound to the A34/A303 interchange.

17 to 11 November - M3 southbound from junction 8 to 9

Diversion is by the A303 and A34.

Monday 4 November 9pm to Tuesday 5 November 6am - A303 westbound Crematorium and Micheldever

We're carrying out essential maintenance work on the A303 westbound between Crematorium and Micheldever on 4-5 November 2025.

We'll aim to finish as early as possible to minimise disruption

  • Lane 1 will be closed
  • Popham services exit slip road will be closed
  • Popham services entry slip road will be closed

The petrol station will remain open 24/7, with escorts provided if needed.

We apologise for any inconvenience caused during these essential works.

We'll put signposted diversions in place while we work. Please follow our official diversions, not satnav instructions.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

Maintenance work on the A1089

You can view more details about the maintenance schemes taking place on the A1089 below:

We’re installing new maintenance access points in the A1089 central reservation barrier.

New access points will allow us to divert traffic onto the opposite carriageway when we close the A1089 north or southbound during maintenance. This will reduce long-term disruption in future .

Closures and diversions

We’ll carry out overnight closures to complete the work safely.

Monday 13 October and Saturday 22 November - A1089 southbound between Asda roundabout and Port of Tilbury entrance

Closed overnight (9pm - 4am) on weeknights.

Diversion

Our diversions will use Marshfoot Road, Chadwell Hill, and Fort Road.

For safety, narrow roads such as Gun Hill, Turnpike Lane and Blue Anchor Lane, will become a one-way system overnight.

We'll lower speed limits through residential areas each night for safety until we re-open the A1089 each morning.

Monday 13 October to Friday 7 November - A1089 northbound between the Port of Tilbury entrance and Asda Roundabout.

Closed overnight (9pm - 4am) on weeknights.

Diversion

You’ll be diverted by:

  • Windrush Way eastbound
  • Gun Hill, Turnpike Lane northbound
  • Linford Road westbound
  • Chadwell Hill southbound
  • Marshfoot Road westbound to the A126 / A1089 Marshfoot Interchange

A temporary one-way system will operate overnight in a clockwise direction on the following roads:

  • Gun Hill
  • Turnpike Lane
  • Muckingford Road
  • Blue Anchor Lane
  • Church Road
  • Coopers Shaw Road.

Traffic from Rectory Road will need to turn right onto Turnpike Lane or Church Road

Monday 10 to Friday 14 November - A1089 southbound between Asda Roundabout and Port of Tilbury entrance

Closed overnight (9pm - 4am) on weeknights.

Diversion

You’ll be diverted by:

  • The A1089 / A126 Marshfoot Interchange
  • Marshfoot Road eastbound
  • Chadwell Hill northbound
  • Linford Road eastbound
  • Turnpike Lane, Gun Hill southbound
  • Windrush Way westbound

A temporary one-way system will operate overnight in a counter clockwise direction on the following roads:

  • Coopers Shaw Road
  • Church Road
  • Blue Anchor Lane
  • Muckingford Road
  • Turnpike Lane
  • Gun Hill

Traffic from Rectory Road will need to turn left onto Gun Hill or Blue Anchor Lane

Monday 17 to Friday 21 November - A1089 between the Asda Roundabout and A13

Closed overnight (9pm - 4am) on weeknights.

We'll share more details shortly.

Our second phase of work, between the Asda Roundabout and A13, will take place in 2026. Please check back for updates.

This work isn’t part of the Lower Thames Crossing project, but we'll keep the project informed on our progress and coordinate work where necessary. 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A2

You can view more details about the maintenance schemes taking place on the A2 below:

Maintenance work on the A20

You can find more details about the maintenance schemes taking place on the A20 below:

Maintenance work on the A2070

You can find more details about the maintenance schemes taking place on the A2070 below:

Maintenance work on the A21

You can find more details about the maintenance schemes taking place on the A21 below:

Maintenance work on the A23

You can find more details about the maintenance schemes taking place on the A23 below:

Works

We're carrying out survey works on the A23 northbound Pyecombe in three phases

Closures and Diversions

Phase 1 – 6th October:

A273 Northbound Off Slip:

  • traffic to continue on the A23 northbound and exit at the A281 junction
  • at the roundabout, follow signs to join the A23 Dale Hill entry slip southbound
  • continue on A23 southbound and exit at the A273 to join the A273 northbound

A23 Pyecombe Entry Slip Northbound:

  • drivers to divert by the Pyecombe southbound slip road onto London Road
  • continue southbound on London Road, then join the A273 Clayton Hill southbound
  • exit the A273 to join the A23 southbound, then use the London Road Roundabout to return to the A23 northbound

A23 Dale Hill Entry Slip Northbound:

  • drivers to divert by the West Road roundabout and head to the A23 Dale entry Slip southbound
  • continue on the A23, join the London Road roundabout to turn back around and join the A23 northbound
Phase 2 – 7th & 8th October:

A23 Pyecombe Entry Slip Northbound:

  • drivers to divert by the Pyecombe southbound slip road onto London Road
  • continue southbound on London Road, then join the A273 Clayton Hill southbound
  • exit the A273 to join the A23 southbound, then use the London Road Roundabout to return to the A23 northbound

A23 Dale Hill Exit Slip Northbound: 

  • drivers to continue on the A23 northbound and exit by the A23 J B2117
  • turn left at the junction on Brighton Road B2117 and continue until the A281 Pyecombe
  • continue on the A281 Pyecombe southbound to the Church Lane roundabout

A23 Dale Hill Entry Slip Northbound:

  • drivers to divert by the West Road roundabout and head to the A23 Dale Entry Slip southbound
  • continue on the A23 and join the London Road roundabout to turn back around and join the A23 northbound
Phase 3 – 13th & 14th October:

A23 J B2117

  • traffic to continue on the A23 northbound
  • exit at A2300 and follow the Hickstead Roundabout to join the A23 southbound
  • exit the A23 southbound to join B2118

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

We're closing the A23 outside Crawley, West Sussex between Handcross and Pease Pottage at night (8pm to 6am) on weeknights for four weeks. 

The southbound side will be closed from Monday 27 October until Friday 7 November. 

The northbound side will then be closed from Monday 10 November until Friday 21 November.

Diversion routes

When the A23 is closed southbound:

  • traffic on the M23 southbound will exit at M23 Junction 11
  • onto the A23 Pease Pottage roundabout
  • and take the exit for Pease Pottage
  • continue south on Brighton Road and London Road (B2114)
  • continue through Handcross High Street (B2110)
  • and take the exit for A23 at the junction on Brighton Road (B2110)
  • and then join A23 Handcross southbound entry slip to join A23 southbound.

When the A23 is closed northbound:

  • traffic on the A23 will divert to the A23 Handcross northbound exit slip
  • and turn right onto Horsham Road.
  • continue northbound through Handcross High Street (B2110)
  • then onto London Road
  • proceed northbound on Brighton Road (B2114) until reaching the A23 Pease Pottage roundabout.
  • at the roundabout, take the exit for the M23 J11 entry slip to join the M23 northbound

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A259

You can find more details about the maintenance schemes taking place on the A259 below:

Works

We're resurfacing the A259 between Skinner's Roundabout and Kettle O' Fish Roundabout. 

Closures and Diversions

Monday 29 September to Saturday 4 October (8pm-6am)

For cars and local traffic:  

The diversion route will take you by:

  • A259
  • A2101
  • A21
  • A28
  • A268 

For HGVs and motorway traffic:  

  • using A259
  • A2101
  • A21
  • A229
  • A249
  • A20
  • A2070
  • A259

This route is approximately 80 miles and will add up to two hours to your journey time. 

HGVs and motorway traffic must follow the signed diversion route as it's the most suitable. Please don't rely on sat-navs during this time. 

We'll maintain access to all properties and our team will escort residents through the works when needed. 

Please allow extra time for your journeys, plan alternative routes where possible and take advantage of rest stops along the diversion route. 

Rest stop information

Eastbound traffic:  

  • Layby on A259 near Winchelsea 
  • Texaco 24hr Garage, Sedlescombe Road 
  • Layby A28 Brede Hill 
  • Layby A268 near Four Oaks  
  • Layby A21 near Sedlescombe 
  • Layby A21 near John’s Cross roundabout  
  • Car park A21 John’s Cross Road 
  • Layby Northbridge Street, Robertsbridge 
  • 24hr garage Ashdene Service Station, A21, London Road  
  • Car park, Unit 4, Station Business Park, Hawkhurst  
  • 24hr garage, High Street, Staplehurst 
  • 24hr parking, Staplehurst Train Station 
  • Layby A20 Lenham 
  • Layby A20 near Charing 
  • Car park, Maidstone Road, A20, Ashford 
  • 24hr garage, Maidstone Road, Ashford 
  • Layby A20 near Ashford 
  • 24hr garage, Brenzett Roundabout, Romney Marsh  

Westbound traffic:  

  • 24hr garage, Brenzett Roundabout, Romney Marsh 
  • 24hr McDonalds, Orbital Park, The Parade, Ashford 
  • 24hr services, Eureka Leisure Park, Ashford  
  • 24hr services, M20 J8, Maidstone 
  • 24hr garage, Chatham Road, Maidstone 
  • 24hr garage, Sandling Road, Maidstone 
  • Car park, Staplehurst Road, Marden 
  • 24hr garage, High Street, Staplehurst 
  • Layby, Northbridge Road, Robertsbridge 
  • Car park, Route 1066 Cafe, Robertsbridge 
  • 24hr garage, Sedlescombe Road North, St Leonards 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Work

We're resurfacing Monk's Walk on the A259 in Winchelsea. 

Closure

Monk's Walk will be closed weeknights 8pm-6am from Monday 6 October until Saturday 18 October.

Diversion

A significant diversion route will be in place.

Diversion route map

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A26

You can find more details about the maintenance schemes taking place on the A26 below:

Closures

Please note that we were unable to complete our works within the roadspace we had due to a variety of reasons.

Therefore we'll be revisiting the A26 from Monday 3 November to Friday 7 November. 

Closed overnight (8pm - 6am).

We'll divert traffic by the A259, Wilson Road, Warren Road, B2123 Falmer Road and A27.

We'll maintain access for local residents.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

Maintenance work on the A260

You can find more details about the maintenance schemes taking place on the A260 below:

Maintenance work on the A27

You can find more details about the maintenance schemes taking place on the A27 below:

Work

We're carrying out essential resurfacing work on the A27 between Southerham Roundabout and Beddingham Roundabout to improve road conditions.

Closures

Monday 27 October to Saturday 1 November from 8pm to 6am each night

  • The A27 will be fully closed between these roundabouts during the work hours.

Diversion

Follow the signed diversion route:

  • A22
  • A26
  • A27

We'll provide escort services for residents who live within the closure area and need access during the work hours.

We apologise for any inconvenience and thank you for your patience.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Works

We're resurfacing the A27 between Clapham Interchange and Grove Lodge roundabout in both directions.

Closures and Diversions

We'll complete the works in two phases as below:

  • Phase 1 - Monday 22 September to Saturday 11 October 2025 (8pm-6am)
  • Phase 2 - Monday 10 November to Saturday 22 November 2025 (8pm-6am)

Diversion for phase 1 will be in place:

  • by A2700 Titnore lane from Clapham Interchange
  • onto A2032 Littlehampton Road leading to A24 Grove Lodge roundabout

Diversion for phase 2 will be in place:

  • by A280 from Clapham Interchange
  • onto A259 Littlehampton Road from Roundstone roundabout
  • through to A2032 Littlehampton Road/Poulters Lane leading to A24 Grove Lodge roundabout

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

We're carrying out drainage survey works on the A3M junction 5 westbound entry slip.

The overnight closures will be carried out on:

  • 22nd September to 19th November 2025 (8pm-6am)

Drivers will be diverted by:

  • A27/A3M Junction 5 link and use the Junction 5 North roundabout to head eastbound to join the A27
  • Exit the A27 to join the Langstone roundabout to turn back around and join the A27 westbound. 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Works

The proposed works are part of the refurbishment of the A27 Falmer Footbridge Headroom.

These works are critical to ensure the structural integrity of the bridge.

Closures and Diversions

As part of our preparation for these works we'll need to carry out a series of tests and investigations to gather the necessary data for the detailed design. The works will take place overnight for two nights in October and three nights in November if more intrusive surveys are required. 

The closures will take place: 

  • 4 and 5 October (8pm to 6am)
  • 17 to 20 November (8pm to 6am) if more intrusive surveys are required

Eastbound entry slip closure at Falmer diversion:

  • join A27 westbound to Carden Avenue roundabout and back on A27 eastbound

Westbound exit slip road closure at Falmer diversion:

  • carry on and take exit at A2070 for Brighton
  • or stay on A27 and use Carden Avenue roundabout to re-join A27 eastbound to exit at Falmer

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

We're replanting areas of the eastbound verge to replace plants we cleared for drainage work in May this year.

Closures

We'll need these overnight (8pm - 6am) lane and slip road closures:

Monday 3 and Tuesday 4 November 

One lane closed on A27 eastbound from Patcham Interchange to Coldean Lane entry slip

Patcham Interchange eastbound entry slip closed.

Wednesday 5 November

One lane closed on A27 eastbound from Patcham Interchange to Coldean Lane entry slip.

Patcham Interchange eastbound entry slip closed.

Carden Avenue eastbound exit slip closed.

Thursday 6 and Friday 6 November

One lane closed on A27 eastbound from Patcham Interchange to Coldean Lane entry slip.

Carden Avenue eastbound exit slip closed.

Patcham Interchange eastbound entry slip diversion

Take the A27 westbound to Devils Dyke interchange and return.

Carden Avenue eastbound exit slip diversion

Take the A27 eastbound to Falmer and return.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

Maintenance work on the A228

You can find more details about the maintenance scheme taking place on the A228 below:

Maintenance work on the A3

You can find more details about the maintenance schemes taking place on the A3 below:

We’ll carry out resurfacing work to areas of the A3, between  Liphook and Grayshott, on the Hampshire and Surrey border. 

We will also be carrying out safety barrier maintenance on the northbound carriageway near Longmoor.

A3 southbound closure:

  • Hogs Back to Liphook 2 to 22 November
  • overnight closures 9pm to 6am
  • Sunday to Friday nights only

There will be a signed diversion route from the A31 and A325.

These works will result in smoother and safer journeys for road users, but we apologise in advance for any disruption during the works.

The diversions will add approximately ten miles to journey length and 25 minutes in driving time depending on start point and destination.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

We're carrying out overnight and lane closures for replacement of an end of life message sign on the A303 eastbound between Barton Stacey and Bullington.

There will be full eastbound closures from Picket Twenty/A3093 junction to the Bullington/A34 interchange on:

  • 30 September to 2 October (9pm-6am)
  • 13 to 16 October (9pm-6am)

There will also be lane 1 closures only around the message sign we are working on between Barton Stacey and Bullington/A34 interchange on:

  • 29 to 30 September (8pm-6am)
  • 2 to 4 October (8pm-6am)
  • 6 to 11 October (8pm-6am)
  • 16 to 17 October (8pm-6am)

Primary diversion by:

  • A3093
  • A303 WB
  • A3057
  • A30
  • re-join at A34/A303 interchange

Secondary diversion in place for Forton exit, The Avenue exit and The Street exit by:

  • B3048
  • B3420 Winchester Road
  • re-joining the main Diversion at B3420/A30 junction

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A303

You can find more details about the maintenance schemes taking place on the A303 below:

Maintenance work on the A30

You can find more details about the maintenance schemes taking place on the A30 below:

Work

We're undertaking road improvement works on the A30, between the A303 and the A34 in September (this work was originally scheduled to take place in July).

The works will be carried out in separate parts – a north section and a south section.

Closures

Week 1 

8 to 10 September – north section

The following overnight (9pm to 6am) closures are scheduled for the junction to the north of the A303. Weeknights only:

  • A30 in both directions between the slip roads for A303 westbound and the A303 eastbound
  • A34 northbound exit and entry slip roads (north of the bridge)

11 and 12 September – south section

The following overnight closures (9pm to 6am) are scheduled for the junction to the south of the A303. Weeknights only:

  • A30 in both directions between the slip roads for the A303 westbound and the A34 southbound slip roads
  • A34 southbound exit and entry slip roads Bullington Lane between Bullington Cross and Sutton Scotney

Week 2 

15 to 19 September – north section

The following overnight (9pm to 6am) closures are scheduled for the junction to the north of the A303. Weeknights only:

  • A30 in both directions between the slip roads for A303 westbound and the A303 eastbound
  • A34 northbound exit and entry slip roads (north of the bridge)

Week 3 

22 to 26 September – south section

The following overnight closures (9pm to 6am) are scheduled for the junction to the south of the A303. Weeknights only:

  • A30 in both directions between the slip roads for the A303 westbound and the A34 southbound slip roads
  • A34 southbound exit and entry slip roads
    Bullington Lane between Bullington Cross and Sutton Scotney

Diversions

Diversions will be in place via:

  • the adjacent junctions Tufton
  • Three Maids Hill
  • Micheldever and Barton Stacey.

The diversions will take road users around ten to 15 minutes, but delays should be fewer because of night time working.

We apologise in advance for any inconvenience and the roadworks will result in smoother journeys for road users.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A31

You can find more details about the maintenance schemes taking place on the A31 below:

Works

We’re carrying out lighting renewal works at Ringwood roundabout including the slip roads. 

To enable us to carry out these works safely, there will be overnight closures to the slip roads and traffic management on the roundabout.

Works will be Monday to Friday between the hours of 8pm to 6am.

Closures

A31 lane closure on outside lane of roundabout

  • Monday 20 October for four nights 

A31 eastbound entry slip road closure

  • Wednesday 22 October to Tuesday 18 November
  • Monday 26 January for one night (resurfacing works)

A31 westbound exit slip road closure

  • Wednesday 19 November to Tuesday 16 December 
  • Tuesday 27 January to Friday 30 January (resurfacing works)

A31 eastbound exit slip road closure

  • Wednesday 17 December to Friday 19 December
  • Monday 5 January to Friday 23 January (including resurfacing works) 

There will be a signed diversions in place for the closures.

These works will generate some noise, for which we apologise in advance. To minimise noise impact, we’ll be using temporary acoustic barrier. 

These works are weather dependant, dates may change. 

For more information, visit our webpage nationalhighways.co.uk/se-maintenance.

You can also call our Contact Centre on 0300 123 5000 open 24/7, who will direct your query to the team, or email: info@nationalhighways.co.uk.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A34

You can find more details about the maintenance schemes taking place on the A34 below:

Work

We're carrying out essential road resurfacing work on the A34 southbound between Botley Interchange and South Hinksey Interchange.

Closure

Week commencing 27 October to 01 November – 5 nights of work from 9pm to 6am

  • The southbound carriageway will be fully closed each night while we resurface the road.

Diversion

Follow the signed diversion route:

  • A420
  • A338
  • A415
  • back to A34
  • then northbound to South Hinksey

There will be some noise from machinery and heavy vehicles during the work. Please accept our apologies in advance for any disturbance, we will limit this wherever we can.

We apologise for any inconvenience and thank you for your patience. 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

We’ll work weeknights only (9pm to 6am) from Monday 16 June to October 2025, weather permitting. 

Tuesday 28 to Wednesday 29 October - Closures at A34 and M4 Junction 13

We'll close these roads  overnight (8pm – 6am) for 2 nights

A34 to M4 eastbound at M4 junction 13 roundabout

Diversion for M4 eastbound:

  • take the M4 westbound to junction 14
  • at M4 junction 14, join the M4 eastbound
M4 westbound junction 13 exit slip

Diversion for A34 northbound :

  • continue on the M4 westbound to junction 14
  • at M4 junction 14, take the M4 eastbound to junction 13
  • at M4 junction 13, join the A34 northbound

Diversion for A34 southbound:

  • take the A34 north toward Chilton
  • take the exit slip off the A34 at its junction with Bury Lane, West Ilsey
  • cross over the A34 on Bury Lane and join the A34 southbound
A34 southbound exit to M4 junction 13

Diversion for M4:

  • continue on the A34 southbound and then onto A339 southbound
  • take the A339 southbound to the Vodaphone roundabout, Newbury
  • at the Vodaphone roundabout take the A339 northbound then the A34 to M4 junction 13
  • at M4 junction 13 join the M4 westbound
  • you can also turn onto the M4 eastbound at M4 junction 14
Graces lane access to M4 junction 13

Graces lane diversion:

  • continue on the B409 Priors Court Road toward Hermitage
  • turn south onto B4009 Long Lane and continue on Shaw Road toward Newbury
  • from Shaw Road take the A339 north

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the A40

You can find more details about the maintenance schemes taking place on the A40 below:

We’re upgrading the street lighting at the A40 Denham Roundabout with more energy efficient light emitting diode (LED) technology.

Our work to upgrade the existing lighting network will start on Friday 17 October 2025 and is anticipated to be completed by early November 2026. 

We’ll need approximately 95 shifts over the next twelve months to complete the scheme. 

We’ll use lane closures and road closures which we’ll install at night between 10pm and 6am.

We’ll start work near the Oxford Road junction and progress in a clockwise direction, replacing the lighting around the inner ring of the roundabout first before moving onto the lighting around the outer ring of the roundabout. 

The Denham Roundabout carries traffic in both directions. Typically, when we need to close one side of the carriageway (e.g., clockwise) we’ll divert traffic around the roundabout in the opposite direction (e.g., anticlockwise). 

Less frequently, we’ll need to divert traffic away from the roundabout using local roads; diversion routes will be fully signed.

We're upgrading roadside lights to LED across the South East. Find out when work is happening in your area and how it may affect you.

Maintenance work on the A404

You can find more details about the maintenance schemes taking place on the A404 below:

Closures

3 to 6 November - A404 northbound carriageway between Bisham Roundabout and Marlow (Westhorpe) Interchange 

Closed overnight (9pm - 6am).

Northbound diversion

  • at Burchett's Green, take the A4130 by Hurley to Henley-on-Thames
  • at Henley-on-Thames, take the A4155 through Marlow and rejoin the A404 at Marlow (Westhorpe) Interchange
10 to 14 November - A404 southbound carriageway between Marlow (Westhorpe) Interchange and Bisham Roundabout

Closed overnight (9pm - 6am). We'll also close southbound access to the A308 from Bisham Roundabout.

Southbound diversion

  • from Marlow (Westhorpe) Interchange, take the A4155 through Marlow to Henley-on-Thames
  • at Henley-on-Thames, take the A4130 by Hurley and rejoin the A404 from Burchetts Green Roundabout

Diversion for southbound access to A308 

  • take the A404 south to Thicket Roundabout
  • at Thicket Roundabout, take the A4 Bath road to Maidenhead
  • join the A308 at Castle Hill Roundabout, Maidenhead

North and southbound diversions  are likely to add around 30 minutes to your journey time.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

Maintenance work on the B2500

You can find more details about the maintenance schemes taking place on the B2500 below:

Maintenance on the M1

You can find more details about the maintenance schemes taking place on the M1 below:

Work

Following recent work, we're conducting further structural checks to ensure the safety of the elevated section which carries the M1 junction 2 entry and exit slip roads.

Closures and diversions

The following roads will be closed overnight: 10pm to 5:30am Mondays to Thursdays, and 11pm to 6am on Fridays:

Tuesday 26 August and Tuesday 16 September

  • The M1 junction 2 southbound slip road - closed overnight

Traffic will be diverted via:

  •  M1 junction 1
  • the A406
  • A41

Tuesday 16 September and Tuesday 7 October

  • The M1 junction 2 northbound slip road including the A1 westbound between Holders Hill Road and Watford Way 

M1 northbound traffic will be diverted via:

  • M1 junction 1
  • the A406
  • A41
  • A1

A1 westbound traffic will be diverted via:

  • B552 Parson Street
  • A504 Finchley Lane
  • A1
  •  A406
  • A1000
  • A406

Tuesday 7 October and Saturday 11 October

  • The A1 eastbound between Page Street and Greenlands Lane

Traffic will be diverted via:

  •  the A1
  • A41
  • A406

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Closures

M1 junction 6a to M25 link road closed weeknights from 10pm Monday 8 September until 5.30am on Saturday 20 September 2025.

The road will be open Saturday and Sunday nights.

Traffic on the M1 northbound will be unaffected.

Diversion

A signed diversion route will be in place using the M25 junciton 20 Kings Langley interchange.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Works

Following recent work, we're conducting further structural checks to ensure the safety of the elevated section which carries the M1 junction 2 entry and exit slip roads.

Closures and Diversions

We'll close the motorway 10pm to 5:30am Mondays to Thursdays, and 11pm to 6am on Fridays.

Tuesday 26 August to Tuesday 16 September 

  • The M1 junction 2 southbound slip road 

Traffic will be diverted by:

  • M1 junction 1
  • the A406 and A41

Tuesday 16 September and Tuesday 7 October

  • The M1 junction 2 northbound slip road including the A1 westbound between Holders Hill Road and Watford Way

Traffic will be diverted by:

  • M1 junction 1
  • the A406
  • A41
  • and A1

A1 westbound traffic will be diverted by:

  • the B552 Parson Street
  • A504 Finchley Lane
  • the A1
  • A406
  • A1000
  • and A406

Tuesday 7 October and Saturday 11 October

  • The A1 eastbound between Page Street and Greenlands Lane

Traffic will be diverted by:

  • the A1
  • A41
  • and A406

Traffic marshals will be on hand to manage overnight access to properties within the closures where required.

Please speak to a member of our team on site who will arrange a safe escort as soon as it’s safe to do so.

We’ll need to use machinery and handheld power tools which will generate some noise. Please accept our apologies in advance for any disturbance, we will limit this wherever we can.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the M11

You can find more details about the maintenance schemes taking place on the M11 below:

Maintenance work on the M2

You can find more details about the maintenance schemes taking place on the M2 below:

We'll use a series of overnight lane closures on the M2 between Farthing Corner and Hartlip while we work.

This means access to Moto Medway services will be restricted overnight on these dates:

13 to 17 October - Moto Medway services eastbound entry and exit

  • closed overnight (8pm - 6am) weeknights

29 October to 7 November - Moto Medway services eastbound entry and exit

  • closed overnight (8pm - 6am) weeknights

8 to 12 December -  Moto Medway services westbound entry and exit

  • closed overnight (8pm - 6am) weeknights

15 to 19 December -  Moto Medway services westbound entry and exit

  • closed overnight (8pm - 6am) weeknights

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the M20

You can find more details about the maintenance schemes taking place on the M20 below:

Work

We're resurfacing the westbound slip road at M20 Junction 7 to improve road conditions.

Closures

Wednesday 22 to Saturday 25 October from 8pm to 6am each night

  • Westbound slip road at Junction 7 (full closure)
  • Lanes 1 and 2 on the M20 approaching Junction 7
  • A249 northbound approach to M20 Junction 7

Diversion

Follow the signed diversion rout:

  •  A249
  • A229
  • A2
  • A249

There may be some noise from our work. Emergency services will still have full access to the area throughout the closure.

We apologise for any inconvenience and thank you for your patience.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Work

We're carrying out essential maintenance work on the M20 between junctions 7-9, including:

  • Retexturing works between junctions 8-9
  • Joint replacement and surfacing inlay on Thurnham Lane and Water Lane bridges between junctions 7-8

Closures

Work will take place weeknights from 20:00 to 06:00 on the following dates:

September 2025
  • Monday 1st - Tuesday 2nd: Eastbound full closure (J8-9)
  • Wednesday 3rd - Friday 5th: Eastbound lane closures (J8-9)
  • Sunday 14th - Wednesday 17th: Eastbound full closure (J7-8)
  • Monday 15th - Wednesday 17th: Eastbound lane closures (J8-9)
  • Thursday 18th - Friday 19th: Eastbound full closure (J7-9)
  • Sunday 21st - Friday 26th: Westbound full closure (J7-9)
  • Thursday 25th - Friday 26th: Eastbound lane closures (J8-9)
October 2025
  • Sunday 5th - Friday 10th: Eastbound full closure (J7-9)
  • Monday 13th - Friday 17th: Westbound full closure (J7-8)
  • Monday 13th - Friday 17th: Eastbound lane closures (J8-9)
  • Sunday 26th - Friday 31st: Eastbound full closure (J7-9)

Diversions

When full closures are in place, clearly signed diversions will be available.

Eastbound diversion:
  • A249
  • M2
  • A2
  • A28
Westbound diversion:
  • A28
  • A2
  • M2
  • A249

Diversion signs with symbols will direct motorway traffic via the M20 to junctions 7 and 10. No escort vehicles will be provided.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the M23

You can find more details about the maintenance schemes taking place on the M23 below:

Maintenance Work on the M25

You can find more details about the maintenance schemes taking place on the M25 below:

Works

We’ll be carrying out maintenance including replacing an expansion joint to the bridge which carries the M25 over Shacklands Road. 

Closure and Diversions

The M25 anticlockwise carriageway will be closed between junctions 5 and 4, along with the A21 northbound from junction 5. These closures will occur weeknights beginning Wednesday 8 to Friday 17 October 2025 from:

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

Each closure will start in the evening and be lifted the following morning. The road will be open on Saturday and Sunday nights. 

M25 anticlockwise vehicles will be diverted by:

  • junction 5 to follow the M26 eastbound to junction 2a Wrotham Heath Interchange
  • then take the A20 London Road northbound to the M20 westbound at junction 2
  • re-joining the M25 at junction 3

A21 northbound vehicles will be redirected by:

  • the junction 5 entry slip to join the M25 clockwise
  • continuing to junction 6 at the Godstone Interchange
  • before turning around and re-joining the M25 anticlockwise and following the above diversion route

Diversion route map

Vehicles travelling on the M25 clockwise carriageway won’t be affected by these works.

In case we need to reschedule this work due to unforeseen circumstances, there are five contingency closures from Saturday 18 October to Wednesday 22 October 2025, overnight from 10pm to 5.30am. Should our work go as planned, these additional weekend closures won’t be required and won’t be installed.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the M271

You can find more details about the maintenance schemes taking place on the M271 below:

Maintenance work on the M3

You can find more details about the maintenance schemes taking place on the M3 below:

We're replacing four bridge joints and resurfacing the north and southbound carriageway at Poles Lane overbridge on the M3.

Closures

M3 northbound junctions 12 to 11

Full overnight closures (8pm - 5am):

  • 26 September
  • 29 September
  • 30 September
  • 1 October
  • 2 October
  • 3 October
  • 6 October
  • 7 October
  • 8 October
  • 9 October
  • 10 October
  • 13 October
  • 14 October
  • 15 October
  • 16 October
  • 17 October

Northbound diversion:

  • take the M3 northbound junction 12 off slip
  • at the roundabout, take the second exit onto A335
  • at Allbrook Interchange, take the first exit onto Winchester Road
  • at the roundabout, take the second exit onto Otterbourne Hill
  • continue onto Main Road
  • go straight over the roundabout, second exit
  • go straight over the roundabout, second exit
  • at the roundabout, continue straight over and take the second exit onto Otterbourne Road
  • at the roundabout, take the third exit onto Hockley Link/A3090
  • at the roundabout, take the first exit and stay on Hockley Link/A3090
  • use the left lane to take the M3 slip road to London/Basingstoke/Newbury/A34/Alton/A31
  • re-join the M3 northbound at Jct 11.
M3 southbound junctions 11 to 12

Full overnight closures (8pm - 5am):

  • 26 August
  • 27 August
  • 28 August
  • 29 August
  • 1 September
  • 2 September
  • 3 September
  • 4 September
  • 5 September
  • 8 September
  • 9 September
  • 10 September
  • 22 September
  • 23 September
  • 24 September
  • 25 September

Southbound diversion:

  • leave the M3 by the junction 11 southbound off slip
  • use the right lane to take the slip road to B3335
  • turn right onto B3335
  • turn left onto Hockley Link/A3090
  • at the roundabout, take the third exit and stay on Hockley Link/A3090
  • at the roundabout, take the first exit onto Otterbourne Road
  • at the roundabout, continue straight onto Main Road
  • go straight over the roundabout, first exit
  • go straight over the roundabout, second exit
  • continue onto Otterbourne Hill
  • at the roundabout, take the first exit onto Winchester Road
  • at Allbrook Interchange, take the secondnd exit onto the M3 slip road to Southampton/Bournemouth/Portsmouth
  • re-join the M3 southbound at junction 12

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

There will be both day and night time lane restrictions and hard closures on the northbound M3 between Junction 6 (Black Dam interchange) for Basingstoke and junction 5 for Hook.

Monday 6 October - Thursday 16 October (9pm to 6am)

  • The northbound inside lane will be closed from 9pm to 6am each night for 10 consecutive nights.

Saturday 18 October - Monday 20 October (9pm to 6am)

  • The northbound M3 will be closed all night (9pm to 6am) for two nights.

Monday 20 October until Friday 21 November (closed 24/7)

  • The northbound inside lane will be closed 24/7

Friday 21 November - Monday 24 November (9pm to 6am)

  • For 3 nights the stretch between junctions 6 and 5 will be closed over night each night from 9pm to 6am.

We'll put signposted diversions in place while we work. 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Maintenance work on the M4

You can find more details about the maintenance schemes taking place on the M4 below:

Closures

M4 Junction 8 - 9 slip roads closed overnight (9pm - 6am) 6 to 17 October, Monday to Friday only. 

A fully signed diversion will be in place. 

Diversions

Use westbound exit slip – M4 J10:

  •  A329(m)
  • Coppid Beach Roundabout
  • then M4 eastbound off at J8-9
  • westbound use entry slip road at M4 J7 and back on the motorway. 

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Works

We're resurfacing and renewing road markings at Holyport Interchange and the A308 (M)

Closure and Diversions

9 to 11 October (9pm-6am)
  • Full closure of Holyport Interchange roundabout
  • M4 eastbound and westbound exit slips
  • A404 southbound entry slip at Shoppenhangers Road
  • A308 carriageway at Braywick Roundabout
13-18 October (9pm-6am)
  • Lane closures on Holyport Interchange roundabout
  • M4 eastbound exit slip
  • Inner lane restrictions at M4 Holyport Interchange

M4 eastbound traffic:

  • exit at Junction 6
  • return westbound to Junction 8-9

M4 westbound traffic:

  • Continue to Junction 10

A308(M) and A404(M) traffic:

  • Signed diversions via local roads

Please allow extra time for your journey and follow signed diversion routes. We apologise for any inconvenience caused and thank you for your patience.

Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.

Documents

Traffic information

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

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