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.

Monday 2 and Tuesday 3 March - A38 between Bodmin and Dobwalls

Closed overnight in both directions.

This is in addition to the planned Glynn Valley closure in mid-March for maintenance work

We'll maintain access for residents and businesses.

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

In support of our Net Zero Highways Plan, we are upgrading 70% of the existing bulbs in road lighting lamps to LED by March 2027. 

Closures

We'll need overnight lane closures while we work. Our next work will be:

26 January - 31 March 2026
A30 Penzance to Cheriton Bishop

16 February - 20 March 2026
A38 near Plymouth, Liskeard, Landrake, Latchbrook and South Brent

16 March - 1 April 2026
A36 between Bath and Southampton 

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 the A30 Hayle Bypass. We’ll be working on the eastbound and westbound carriageways between Loggans Moor roundabout and St Erth roundabout. 

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

Closures

The A30 Hayle Bypass will be closed weeknights between Loggans Moor Roundabout and St Erth Roundabout.

This is when there’s the least amount of traffic on the road.

We’ll be working Monday – Friday, 8pm - 6am, from Monday 02 February until Tuesday 03 March.

During the day and at the weekend the road will be open as usual.

Diversions

Well signed diversions will be in place. 

Eastbound traffic:

• leave the A30 at St Erth Roundabout
• follow the B3301
• continue through Hayle
• rejoin at Loggans Moor Roundabout

Westbound traffic:

• Follow eastbound in reverse 

Please plan ahead and allow extra time for your journeys.

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 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 

February 2026 

The scheme will begin with ten days of work to clear vegetation from 16 February with weekday northbound lane closures between 7am until 5pm. 

April – November 2026 

The repair works to the wall will take place from 7 April until November 2026 

We need to close sections of the northbound lane of the A36 using temporary traffic lights 24 / 7 to complete the work safely.

At certain points we'll be working on two sections of the route at the same time.

The lane closures will be less than 200m long and our teams will be on site to monitor and manage traffic queues to minimise delays as much as possible. 

While disruptive, temporary traffic lights allow us to complete complex work that can’t be done overnight, as safely and quickly as possible. 

We always aim to work to the programme, however unforeseen circumstances or adverse weather conditions may mean changes.

Please plan ahead and allow plenty of time for 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.

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 February 2026 (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.

Work includes:

• a new dedicated left turn lane for eastbound vehicles leaving the A36 into Codford St Peter
• upgraded drainage
• improved pedestrian crossings on the A36 between High Street and Sherrington Lane
• renewed road markings
• improved signs
• vegetation works

Temporary traffic lights

From 13 April – A36 / High Street / Sherrington Lane crossroads

In place 24/7 during works for around seven weeks.

Closures

8pm Friday 17 to 6am Monday 20 April – A36 Salisbury Road to Station Road

Full weekend closure.

Diversions - 

For through traffic by A303 / A350.

For local traffic from Codford by Chitterne Road and the B390 towards Knook.

We'll maintain access to Codford St Peter by Salisbury Road / High Street.

8pm Sunday 10 to 7pm Wednesday 13 May – High Street junction (where High Street joins the A36) 

Closed for three days.

Diversion -

Diversion through Codford, rejoining the A36 at Salisbury Road.

Wednesday 20 to Friday 22 May and Monday 25 May - A36 Salisbury Road to Station Road

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

Diversions - 

For through traffic by A303 / A350.

For local traffic from Codford by Chitterne Road and the B390 towards Knook.

We'll maintain access to Codford St Peter by Salisbury Road / High Street.

Pedestrian crossing point

We'll put a signed temporary pedestrian crossing on the A36 between High Street and Sherrington Lane. We'll need to move the crossing point slightly depending on the work we're doing.

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.

Works

We’re resurfacing the A36 and A303 Deptford slip roads from Monday 23 February to Friday 27 March.

We'll be working using a combination of overnight closures on the A36 (between Fisherton de la Mere and Steeple Langford) as well as closures on the slip roads at Deptford junction.

Closures and Diversions

Monday 23 February to Monday 2 March (8pm-6am, including Saturday and Sunday nights)

• full overnight closure of A36 between Steeple Langford and Deptford

The road will be open as usual during the day. 

A36 northbound traffic will be diverted: 

• from Wilton along the A360 to Longbarrow roundabout
• follow the A303 through Winterbourne Stoke
• re-join the A303/A36

Southbound traffic will follow the same route in reverse.

Tuesday 3 to Friday 6 March (weeknights only, 8pm-6am)

• full overnight closure of A36 from south of Upton Lovell through to Deptford

The road will be open as usual during the day.

A36 northbound traffic will be diverted:

• to continue along the A303 at Deptford
• through to the A350
• continue to Crockerton roundabout
• re-join the A36

Southbound traffic will follow the same route in reverse.

The remainder of the work will be carried out under overnight lane closures and slip road closures.

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

We'll maintain access to properties directly within the closures but please plan ahead and allow extra time for 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 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.

Closures

We'll work overnight  (8pm - 6am) Mondays to Fridays.

We'll use a combination of:

• overnight  lane closures (8pm to 6am)
• short sections of overnight carriageway closures (8pm-6am)
• temporary traffic lights
• convoy systems - you'll be escorted through works behind one of our vehicles at reduced speed

We'll signpost diversion routes, if needed, and maintain access for emergency services.

During the day the road will be open as usual. However, please plan ahead and allow extra time for 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 website. Our travel alerts give details of live incidents on our network.

The A38 will be closed overnight between Turfdown Cross and Twelvewoods roundabout (at the junction with the A390 at Dobwalls).

Monday 16 to Friday 20 March (8.30pm-6am)

Works will include:

• clearing verges and drains to prevent flooding
• surfacing of small sections of road 
• cleaning signs to ensure good visibility
• trimming vegetation
• refreshing road markings and road studs where needed. 

Cornwall Council will also be using the closure to clear litter.

Diversions

• All light vehicles travelling both east and westbound will be diverted by Lostwithiel (see orange route on map)
• HGV’s travelling westbound will also be diverted by this route

HGVs over 20 tonnes travelling eastbound will be diverted by:

• the A30 to Launceston
• then onto the A388
• re-join the A38 at Carkeel roundabout (see blue route on map)

Diversion route map

Access to Bodmin Parkway Station will be maintained throughout the works. Drivers needing to enter or exit Bodmin Parkway station overnight will need to travel via Turfdown roundabout.

Please plan ahead and allow plenty of time for 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 site. Our travel alerts give details of live incidents on our network.

Work

We're replacing the lighting at Zoons Court roundabout, along with new road markings, studs, anti-skid surfacing and resurfacing work.

Closures and diversions

2–27 February

Lane closures and full closures overnight (8pm–6am), Monday to Friday, on Zoons Court roundabout and the A417 and Delta Way approaches.

2 February 

Lane closures only overnight

3 February 

Full overnight closure of the A417 northbound from A417 Zoons Court roundabout to A417/A38 roundabout.

Diversion via:

• Delta Way southbound
• Hucclecote Road and Barnwood
• turn right at the roundabout to join Coronium Avenue and rejoin the A417

4 February

Full overnight closure of A417 southbound carriageway from A417/A38 Roundabout to A417 Zoons Court Roundabout.

Diversion is the reverse of the route above.

5 February

Overnight closure of the M5 northbound J11a exit slip onto A417 northbound

Diversion via:

• 11a northbound exit slip
• follow the southbound slip road and join the B4641 Valiant Way to Delta Way roundabout and
• take the third exit to take the Brockway Bypass / Delta Way to Zoons Court roundabout

Full overnight closure of A417 northbound from to A417 Brockworth Interchange to A417 Zoons Court Roundabout.

Diversion

• leave the A417 at 11a and
• take the A4641 to the Delta Way roundabout and
• take the Brockworth Bypass / Delta Way to Zoons Court roundabout.

6 February 

Full overnight closure of Brockworth Bypass / Delta Way southbound from A417 Zoons Court Roundabout to Hucclecote Road

Diversion via:

• A417 northbound to the A417 / A38 roundabout.
• Take the second exit straight on to the Walls roundabout and
• take the first exit onto the Hucclecote Road to rejoin the Delta Way

March weekends

Full overnight closures (8pm–6am) on:

• 7 - 8 March
• 14 -15 March 
• 21 - 22 March
• 28 - 29 March held as a contingency.

Signed diversions will be in place during full closures.

We work overnight when traffic volumes are lower. Thank you for your patience while we complete this important safety work.

Other works nearby: There is additional work on the A417 which may affect 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. Our travel alerts give details of live incidents on our network.

We're investing almost £6million to improve the A46 between Cold Ashton roundabout and London Road junction roundabout.

Our works will improve safety, make journeys more reliable, and reduce the need for future unplanned closures. 

This year, we'll be undertaking several essential schemes on the A46, including:

Phase one (Sunday 18 January – Friday 20 March)

• Geotechnical surveys at Charmy Down
• installing new and upgraded chevron signage at Hartley Bends

To find out more and to keep up to date with our works on the A46, visit our dedicated webpage.

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

We are undertaking drainage work on the M4 eastbound between junctions 18 and 17 from February 2026 until March 2027 

This spring there will be lane closures on the M4 between junctions 18 and 17 to allow us to undertake enabling work. 

There will be a 50mph speed limit between August 2026 and March 2027 with narrow lanes in place on the M4. 

While disruptive, narrow lanes with a 50mph speed limit allow us to complete complex work that can’t be done overnight and help us stay on track to meet our project completion date in 2027. 

Closures 

23 February - 21 March 

The M4 will have one lane open in both directions weeknights from 8pm – 6am between junctions 18 and 17. 

Spring 2026 

Further overnight lane closures on the M4 in both directions for more preparation work. 

August 2026 – March 2027 

The M4 will have three narrow lanes running in each direction 24/7 between junction 18 and 17 with a speed limit of 50mph.

Full overnight closures of the M4 will be required to install and removed the narrow lanes.

Signed diversions will be in place via Chippenham for full M4 closures.

Dates and details of these closures will be shared nearer the 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. Our travel alerts give details of live incidents on our network.

Weekend closures

To do this work safely, we need to close each carriageway of the bridge for one weekend each.

6–9 March: Southern carriageway closed from 8pm Friday to 6am Monday

13–16 March: Northern carriageway closed from 8pm Friday to 6am Monday

The M5 will remain open as normal during both closures.

Weekend closures allow us to complete complex work that cannot be done overnight.

Diversion routes

Signed diversion routes will be in place during each closure.

Southern carriageway closure (6–9 March)

Motorway traffic

• M5 southbound to junction 20
• return via M5 northbound

Non-motorway to Portishead:

• Abbots Leigh
• B3129
• Whitehouse Lane
• Naish Hill
• Clapton Lane
• Lipgate Place
• Clevedon Road
• Bristol Road
• Portbury Common

Non-motorway from Portbury:

• Mill Lane
• Portbury Lane
• B3128
• B3129
• Abbots Leigh

Non-motorway to Portbury Docks: 

• St Georges Hill
• Church Road
• Marsh Lane
• Gordano Way

Northern carriageway closure (13–16 March)

Motorway traffic:

• M5 northbound to junction 18
• Avonmouth Spur to St Brendan's roundabout
• return via Avonmouth Spur and junction 18 to M5 southbound

Non-motorway from Portishead:

• Portbury Common
• Bristol Road
• Clevedon Road
• Lipgate Place
• Naish Hill
• Whitehouse Lane
• B3129
• Abbots Leigh

Non-motorway from Portbury Docks: 

• Royal Portbury Dock Road
• Gordano Way
• Marsh Lane
• Church Road
• St Georges Hill

Further, full repair works will be required in the future. These works will be scheduled and publicised in due course. 

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 need to undertake essential refurbishment work on the Portbury Bridge which runs over the M5 junction 19 Gordano Interchange. 

During the work we'll be:

• replacing bridge joints
• completing significant concrete repairs
• renewing surfacing
• and improving the drainage system.

Junction 19 of the M5 is a key route in the region, connecting the port and Bristol to the M5.

This work will improve the resilience of the route and reduce the risk of future unplanned closures.

Update

We need to pause work due to an environmental issue. This requires us to apply for a European Protective Species Licence from Natural England.

We expect to resume work on site and provide a revised programme of closures by the end of March.

This means the completion date of the scheme will now be early summer.

This is subject to weather and the environmental issue being resolved.

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're resurfacing the M5 southbound between junctions 14 and 15.

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

Closures

We’ll have overnight southbound carriageway closures from 9pm until 6am on the M5 junctions 14 - 15:

• Monday 23 February
• Tuesday 24 February

If we’re unable to complete our work as planned during the above dates, we’ll also have closures on Wednesday 25 February.

Diversion

When the southbound carriageway is closed, traffic will follow:

• exit at junction 14 and turn right onto B4509
• turn left onto A38 (Gloucester Road)
• re-join the M5 via junction 16 (southbound follow signs for the South West) or (northbound follow signs for M4 Wales or London) 

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.

Works

We’re renewing road markings and replacing road studs along stretches of the M5 between junctions 22 and 31 until spring 2026.

We’ll work overnight and on weeknights only.

Closures

To work safely, we'll work in phases under a combination of:

• overnight lane closures (8pm-6am)
• short sections of overnight carriageway closures (9pm-6am)

If needed, well signed diversion routes will be in place. 

Please plan ahead and allow extra time for your journeys.

Dates may change at short notice due to poor weather conditions or operational reasons. 

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.

Works

We’re replacing several of our motorway gantry signs in the region. 

We’ve planned a combination of overnight lane closures and full slip road closures (8pm-6am). 

Closures

Thursday 26 February

M5 J17 - J18a southbound closure (9pm – 6am)

Diversion via:

• Take the M5 J17 northbound entry slip
• exit M5 via J15
• take the M4 westbound until J22
• exit the M4 via J22 exit slip and head south on the M49
• rejoin the M5 southbound at J18 entry slip 

All diversion routes will be well signed.

Please plan ahead and allow extra time for your journeys. 

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 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.