South West - Maintenance schemes

Our surveys have revealed 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

We'll need a combination of overnight lane and carriageway closures while we work. Our next work (s) will be:

1 to 8 October

• M4 near Swindon

From Tuesday 14 October

• A36 between Trowbridge and Southampton

Monday 3 November for approximately 5 months

• A38 from Lee Mill to Exeter

If necessary we'll put signed diversion routes in place.

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

Work

We’re resurfacing the A30 in both directions from east of Loggans Moor Roundabout through to Tolvaddon junction. 

This will maintain and improve safety for everyone using the road and reduce the need for any unplanned closures. 

Closures and diversions

We’ll be working weeknights (Monday – Friday between 8pm and 6am) when there is less traffic on the road. 

During the day and at weekends, including over the August Bank Holiday weekend, the road will be open as usual.

Our works will be carried out in two phases: 

Phase 1 – Loggans Moor Roundabout to Treswithian

Eastbound:

• Monday 28 July 2025 to Tuesday 12 August 
• Monday 1 to Wednesday 3 September 

Diversion

Traffic will be diverted along Carwin Rise through to Roseworthy Hill and rejoin the A30 at Treswithian

Westbound - Treswithian to Loggans Moor roundabout:

• Monday 11 August to Wednesday 27 August
• 1 night Thursday 16 October 2025

Diversion

• Traffic will follow the opposite diversion as eastbound 

Phase 2 – Treswithian – Tolvaddon - Avers

Eastbound:

• Thursday 4 to Monday 15 September 

Diversion

• Traffic will be diverted to the A3047 Treswithian Road and rejoin at Tolvaddon

Eastbound:

• Friday 17 to Wednesday 24 September
• Tuesday 21 October (1 night)

Diversion

• Traffic will be diverted along A3047 from Tolvaddon to Avers

Westbound:

• Thursday 25 September to Friday 17 October 

Diversion

• Traffic will follow the opposite diversion as eastbound from Tolvaddon to Treswithian 

Well signed diversions will be in place. 

Dates may change at short notice due to poor weather conditions or operational reasons. If we’re unable to complete our work as planned, we may need to continue beyond the dates stated above. 

Please plan ahead and allow extra time for your journeys. 

Access will be maintained to properties within the closure area. 

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 carrying out enabling works and internal cleaning of the Blowinghouse and Gilberts Coombe viaducts on the A30 between Redruth and Camborne in Cornwall.  

This work is to prepare for structural inspections and surveys to assess the condition of the viaducts to help identify any future work that may be required. 

We'll work from 13 October until 11 December 2025 and will require a combination of full overnight road closures and lane closes. 

Closures

13 to 31 October 2025 (Monday to Thursday 9:30am – 6pm) 

• one lane closure eastbound 

1 November until 11 December 2025 (Monday to Thursday 9:30am – 6pm and Sunday’s 6am – 6pm)

• one lane closure eastbound 

28 October 2025 (8pm-6am)

• full closure eastbound overnight 

19 November 2025 (8pm-6am) 

• lane closure westbound overnight 

20 November 2025 (8pm-6am)

• lane closure westbound overnight 

Diversion routes will be in place and well signposted throughout. 

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 carrying out geotechnical surveys on the A30 at Rawridge Hill to help us plan future work at this location. 

Closures and Diversions

The A30 will be closed between Honiton and the A30/A303 junction for five nights from Monday 13 October (8pm-6am).

Eastbound traffic: 

• exit the A30 at Honiton (Honiton A375 / Heathpark junction)
• follow the A35 to Axminster
• then the A3052 through Chard and back to the A303

Westbound traffic:

• follow the same route in reverse

Local traffic:

• use the diversion above, but at Chard take the Old A30 to re-join at the A30/A303 junction at Yarcombe

Through traffic:

• exit and re-join the A303 at Ilminster roundabout

The A303 from the A30/A303 junction through to Ilminster roundabout will stay open for local traffic throughout the closures. 

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 renewing road markings and replacing road studs along stretches of the A303 between Devon and Wiltshire to improve visibility and safety for drivers. 

The work will be carried out in phases under overnight closures to keep disruption to a minimum. 

Closures and Diversions

10 October

• lane closures and temporary traffic lights both directions between Deptford to the A350 Junction. 

13 to 16 October (8pm-6am)

• full eastbound carriageway closure between Countess Roundabout and Parkhouse off slip.

Traffic will be diverted by:

• the A345
• A36
• A30
• and A388 to re-join the A303

17 October (8pm-6am)

• full carriageway closure between Southfields Roundabout and Eagle Tavern Junction.

Westbound traffic will be diverted by:

• A358
• Old A30
• and re-join A303 at Upottery

Eastbound traffic will be diverted as above in reverse.

20 to 31 October (8pm-6am)

• full carriageway closure between Hayes End Roundabout and Southfields Roundabout.

Westbound diversion for cars and other light vehicles by: 

• A303 west to Podimore roundabout
• A372
• A378
• A358 to re-join A303 at Southfields roundabout

Eastbound diversion for cars and other light vehicles as above in reverse.

Westbound diversion for HGVs by: 

• A303 to Podimore roundabout
• A372 to Othery, A361
• A38
• A358
• and re-join A303 at Southfields roundabout.

Eastbound diversion for HGV’s as above in reverse.

Additional dates and locations may be added to the programme and we'll update this page if 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.

We're refreshing the road markings and cat eyes at various locations along the A36 between Bath and Southampton to keep the road safe for drivers.

The work will take place weeknights only from Tuesday 16 September to Wednesday 10 December (8pm to 6am).

Dates may change at short notice due to poor weather conditions or operational reasons. If we’re unable to complete our work as planned, we may need to continue beyond the dates stated above. 

Well-signed diversions will be in place to help you plan alternative routes.

We know roadworks can be frustrating, but this work is vital to maintain safety standards on this busy route. By working overnight on weeknights, we're minimising disruption to your journeys.

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 on the A36 between Norton Bavant and Deptford in Wiltshire to improve your journey and keep the road in good condition. 

To complete this work safely, we need to close parts of the road at different times between November 2025 and January 2026. 

Closure and Diversions

The A36 will be completely closed in both directions between Cotley Hill roundabout and Manor Road junction at Upton Lovell: 

• 3 to 28 November and 1 to 12 December (weeknights only, 8pm to 6am)

Full weekend closures:

• 8pm Friday to 6am Monday on 14-17 November, 21-24 November, and 28 November to 1 December

Deptford junction closures: 

• The slip roads at Deptford junction will be closed 5 to 28 January (weeknights only, between 8pm and 6am)

Diversion routes

When Deptford junction is closed: 

• If you're travelling towards Amesbury, follow the diversion to Wylye and re-join the A303
• If you're heading west from Salisbury, go by Longbarrow and Winterbourne Stoke to reach Deptford 

When the A36 is fully closed: 

• from Warminster - use the diversion at Cotley Hill Roundabout back along the A36, then join the A350 to re-join the A303 west of Chicklade 

From Salisbury:

• follow the same route in reverse 

This work depends on weather conditions, so dates may change. If we can't complete everything as planned, we may need to continue beyond these dates. 

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 (Monday – Friday between 8pm and 6am) when there is less traffic on the road. 

The road will be open as usual during the day and at weekends, including over the August Bank Holiday weekend.

Well signed diversions will be in place.

We'll work in 3 Phases:

Phase three

13 October 

• A38 Deep Lane westbound exit slip closed and convoy on the A38 westbound carriageway.

Diversion:

• Take the A38 Marsh Mills exit slip
• re-join the A38 eastbound and leave via Deep Lane eastbound exit slip

14 October

• A38 Smithaleigh westbound entry slip closed.

Diversion:

• Drivers will take the local road network to re-join the westbound A38 at Lee Mill

HGVs will not be able to re-enter the A38 until 6am if they choose to leave the A38 at Smithaleigh after 8pm.  

• A38 Voss Farm exit slip closed

Diversion:

• leave by A38 by Deep Lane westbound exit slip
• turn right onto B3416
• continue to roundabout and return and turn left onto local road network. 

There will also be convoy working on the A38 carriageway in both directions.

15 October

• Convoy working on the A38 westbound carriageway between Deep Lane and Marsh Mills.

This means the A38 is still open, but you will be taken past the working area behind a traffic vehicle at a reduced speed.

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.

Bloor Homes and Montel Civil Engineering are developing land at Stoketon Cross for new housing.

This includes:

• a new access roundabout onto the A38
• two new access junctions.

Bloor Homes and Montel Civil Engineering will need traffic management at various locations while they work.

For more information, visit Montel Civil Engineering.

Closure

Monday 13 to Wednesday 15 October - A46 eastbound entry slip at London Road Junction near Bath

Closed overnight (8pm - 6am) each night.

Diversion

• head north on the A46
• then exit and rejoin A46 southbound at Swainswick junction

Please plan ahead and allow extra time for your journey.

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.

You'll find more information ion this scheme on our page Safety schemes in the South West region.

Work

We're resurfacing the M4 eastbound carriageway between junctions 16 and 15.

This essential work will maintain and improve safety for everyone using the road, and reduce the need for unplanned closures. 

Closures 

Monday 13 October to Monday 03 November 2025

• M4 eastbound carriageway between junction 16 (Spittleborough Interchange, west of Swindon) and junction 15 (Plough Hill Interchange, east of Swindon). 

We'll carry out this work under weeknight closures as below: 

• Monday - 8pm to 6am
• Tuesday - 8pm to 6am
• Wednesday - 8:30pm to 6am
• Thursday - 9pm to 6am
• Friday - 9pm to 7.30am

Diversion

When the eastbound carriageway is closed, traffic will follow: 

• exit at junction 16 and join the A3102 
• merge onto B4006/B4289 
• at Transfer Bridges roundabout, take the third exit onto A4289 
• at the next roundabout, follow diversion signs to join A4313/Octal Way 
• at the junction for A4312 (Drakes Way), turn right towards M4/Walcot Town Centre 
• at Drakes Roundabout, take the first exit onto A4259 (Queens Drive/Marlborough Road) 
• at Commonhead Roundabout, take the fourth exit to join the A419 
• re-join the M4 eastbound carriageway at junction 15, taking the first exit at Badbury Roundabout 

We're using a new way to keep everyone safe while we install roadworks on the motorway.

We're using a specialist vehicle that creates a temporary work zone on the road. This zone is traffic-free for about 9 minutes at a time.

While we work, traffic can still move at around 10mph rather than being stopped completely. Journeys may take a bit longer than usual, but drivers won't face the long delays that traditional closure methods can cause.

This new method helps us:

• Keep our road workers safer
• Keep traffic moving instead of creating long delays
• Finish our work more quickly
• Reduce pollution from vehicles stuck in traffic
• The specialist vehicle also has a digital warning system. This alerts our workers if any vehicle accidentally enters the protected work area, helping keep everyone safe

Please plan ahead and allow extra time for your journeys. 

This work depends on favourable weather conditions – heavy rain may affect our progress. 

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 mostly work overnight (7pm - 6am) Monday to Friday nights only.

There will be one overnight (8pm - 7am) weekend closure of M5 southbound between junction 29 to 30 on Saturday 29 November.

Our work won't affect the northbound carriageway.

Closures

We'll need these overnight closures while we work:

15 September to 7 November - M5 southbound between junctions 28 and 29

Full closure.

Diversion

• take B3181, Cumberland Way then Honiton Road (A30)
• re-join the M5 at junction 29 

Saturday 11 October - M5 southbound junction 30 entry slip

Entry slip road closed.

Diversion

• M5 northbound up to junction 29 to re-join the M5 southbound carriageway at junction 29

11 to 12 November - M5 junction 29 entry and exit slips 

Slip roads closed. Single lane running between junction 28-29.

Diversion for access to A30 

• continue on M5 southbound to junction 30
• then take Sidmouth Road, Moor Lane, Honiton Road to join the A30 

Diversion for access to M5 from A30

• stay on A30 westbound
• take Honiton Road, Moor Lane and Sidmouth Road
• join the M5 southbound at junction 30 

13 to 26 November - M5 junction 29 entry slip and junction 30 exit slip roads

Slip roads closed. Single lane running between M5 junctions 29 and 30.

M5 Junction 29 entry slip closure - diversion for access to M5 from A30

• stay on A30 westbound
• take Honiton Road, Moor Lane and Sidmouth Road
• join the M5 southbound at junction 30 

Junction 30 exit slip closure diversion

• stay on the M5 southbound
• leave at junction 31
• head west on the A30
• take fourth exit at roundabout to join A30 eastbound
• then take the M5 northbound at junction 31
• take the exit at junction 30

27 November - M5 junction 30 entry slip

Slip road closed. Single lane running between M5 junction 29 to 30. 

Diversion for access to M5 southbound and A30

• head south-west on A379 / Rydon Lane
• take exit at roundabout onto B3123/Bad Homburg Way
• then take Alphin Brook Road, Trusham Road, Marsh Green Road West and A377 / Alphington Road to join the A30

Diversion for access to A38

Head southwest on A379 / Rydon Lane to join A38 Westbound at Kennford. 

28 November to 8 December - M5 southbound between junction 29 to 30 

Full closure.

We'll also close this section of road from 7pm Saturday 29 to 7am Sunday 30 November.

Diversion

• take the A30 westbound, then Honiton Road, Moor Lane and Sidmouth Road
• re-join the M5 southbound at junction 30 

9 to 10 December -  M5 southbound between Junction 28-29 

Full closure.

Diversion

• Take B3181, Cumberland Way and Honiton Road (A30) to re-join M5 southbound at junction 29 

11-12 December - M5 southbound between Junction 29-30 

Full closure.

Diversion

• take A30 westbound, then Honiton Road, Moor Lane and Sidmouth Road
• re-join the M5 southbound at junction 30

We're using a new way to keep everyone safe while we install roadworks on the motorway.

We're using a specialist vehicle that creates a temporary work zone on the road. This zone is traffic-free for about 9 minutes at a time.

While we work, traffic can still move at around 10mph rather than being stopped completely. Journeys may take a bit longer than usual, but drivers won't face the long delays that traditional closure methods can cause.

This new method helps us:

• Keep our road workers safer
• Keep traffic moving instead of creating long delays
• Finish our work more quickly
• Reduce pollution from vehicles stuck in traffic
• The specialist vehicle also has a digital warning system. This alerts our workers if any vehicle accidentally enters the protected work area, helping keep everyone safe

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.

We'll keep three lanes open in each direction with a speed limit of 50mph for most of our works

Closures

We'll need overnight closures to install traffic management:

20 and 21 October 2025 - M5 southbound between junctions 25 and J27

Two lanes closed overnight (8pm – 6am).

22 to 25 October 2025 - M5 northbound between junctions 27 and 25

Two lanes closed overnight (8pm – 6am).

25 to 27 October 2025 - M5 north and southbound between junctions 27 and 25

Two lanes closed overnight (8pm – 6am) in each direction.

27 to 31 October 2025 - M5 northbound between junctions 27 and 25

Full closure overnight (9pm - 6am).

28 October 2025 – 20 February 2026

Northbound speed limit of 50mph 24 hours a day.

1 to 3 November 2025 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

2 November 2025 – 12 February 2026

Southbound speed limit of 50mph 24 hours a day.

8 to 10 November 2025 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

1 to 6 December 2025 - M5 northbound between junctions 27 and 25

Full closure overnight (9pm - 6am).

6 to 8 December 2025 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

13 to 15 December 2025 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

20 to 21 December 2025 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

2 to 3 January 2026 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

11 to 12 February 2026 - M5 southbound between junctions 25 and J27

Full closure overnight (9pm - 6am).

14 - 15 February 2026 - M5 southbound between junctions 25 and 27

Full closure overnight (9pm – 6am)

19 – 23 February 2026 - M5 northbound between junctions 27 and 25

Full closure overnight (9pm - 6am).

22 - 25 February 2026 - M5 southbound between junctions 25 and J27

Two lanes closed overnight (8pm – 6am)

25 - 28 February 2025 - M5 northbound between junctions 27 and 25

Two lanes closed overnight (8pm – 6am)

Diversions

We'll put signed diversions in place from  M5 southbound junctions 25 to J27 and M5 northbound junctions 27 and 25 by the A38 and A358.

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.