Maintenance schemes - South West

Maintenance schemes taking place in the South West region.

Project information

View a maintenance scheme

You can view more details about the maintenance schemes taking place in the South West below:

National Highways recognises the environmental value of trees. We manage our trees through their whole lifecycle, to control safety risk and optimise their environmental value.

We began a programme of Ash Dieback removal in 2022. Although the issue still requires careful monitoring, we have now completed most of our clearance work. Over the coming months we will begin replanting the areas most affected by this work. We will plant just over 3,000 new trees along the A30 in Devon and Cornwall, ahead of bird nesting season. Local species such as Hazel, Crab Apple, Holly, Hawthorn, Honeysuckle, European Spindle, Hornbeam and several others in lesser numbers, will be planted in a variety of sizes. The trees have been carefully chosen to ensure local habitats are encouraged to flourish.

The work will take place on verges with some rolling lane closures in place. To find out more visit https://nationalhighways.co.uk/our-roads/south-west/

Ash dieback is a national issue and more information from the Forestry Commission can be found at https://www.gov.uk/guidance/managing-ash-dieback-in-england.

Tree Council - Ash dieback a tree owners guide

https://treecouncil.org.uk/wp-content/uploads/2020/06/Tree-Council-Ash-dieback-tree-owners-guide-FINAL.pdf

We’re refreshing the road markings and replacing the studs along the A30 between the M5 and Redruth.

We’ll carry out this work in phases with short section of carriageway closed weeknights between 9pm and 6am.

During the day the road will be open as usual.

Latest closure information

  • Monday 10 & Tuesday 11 June: M5 junction 31 (Pearce's Hill Interchange) southbound towards A30 will be closed between 9pm to 6am each night.

A diversion will be in place via the Kennford exit slip (Shell Garage) onto A38 northbound.

  • Wednesday 12 & Thursday 13 June: the A30 westbound will be closed between Woodleigh and Widdon Down, as well as the Whiddon Down exit slip, 9pm to 6am each night.

A diversion will be in place from Woodleigh via Cheriton Bishop, Crockenwell and Hask Lane to Widdon Down.

  • Friday 14 June: the A30 eastbound will be closed between Tregadillett and Pennygillam from 9pm to 6am.

A diversion will be in place via Tregadillett and Trebursye.

  • Monday 17 to Wednesday 19 June: the A30 westbound will be closed between Sourton Cross and Stowford, including the Sourton entry slip, and the Stowford exit and entry slips, from 9pm to 6am each night.

A diversion will be in place via Bridestowe, Lewdown, Lifton to join the A30 westbound at the Lifton junction.

  • Thursday 20 June: the A30 westbound at the Lifton junction will be closed from 9pm to 6am.

A diversion will be in place via the A388.

  • Friday 21 June: the A30 eastbound exit slip will be closed at the Tongue End junction between 9pm to 6am.

A diversion will be in place to via the A30 to Whiddon Down where you can exit and return back to A30.

  • Monday 24 June: the A30 eastbound entry at Sourton and exit at Meldon will be closed from 9pm to 6am.

To join at Sourton, please use the A386, Holsworthy Road, Beacon Down Hill, and B3260. To leave at Meldon, please stay on the A30 and travel to the next exit.

  • Tuesday 25 & Wednesday 26 June: the westbound A30 will be closed between Whiddon Down and Tongue End (Coombe Head), including the westbound entry and exits at Widdon Down from 9pm to 6am each night.

Diversion via the A382, Exeter Road through Sticklepath, B3260 to rejoin the A30.

  • Thursday 27 to Friday 28 June: the A30 eastbound will be closed between Tongue End to Whiddon Down from 9pm to 6am each night.

Diversion via the B3260, through Sticklepath, Exeter Road and A382 to rejoin the A30.

  • Monday 1 & Tuesday 2 July: the A30 westbound between Tongue End (Coombe Head) and Sourton, including the Tongue End entry, Meldon entry and Sourton exit slips from 9pm to 6am each night.

Diversions:

Tongue End and Tongue End entry slip diversion is via B3260, Exeter Road, New Road, Beacon Down Hill, Holsworthy Hill A386 and rejoin the A30 at Sourton Down.

Meldon Entry slip closure diversion is via Tavistock Road / B3260 onto Beacon Down Hill, Holsworthy Hill, A386 and rejoin A30 at Sourton Down.

We'll then continue to work our way along the A30. We’ll be posting the latest information about where we’re working here.

We’re carrying out surveys of the drainage network on the A36 at Stapleford.

These will give us a better understanding of the current condition of the drainage in this area and help plan for future improvements to increase capacity and reduce the risk of flooding.

  • Closure information - updated 29 May

There will be temporary traffic lights on the A36 at Stapleford overnight, 8pm to 6am, on Monday 24, Tuesday 25 and Wednesday 26 June from the ESSO garage going west for around 300 metres.

Access to the petrol station and properties will be maintained throughout. During the day the road will be open as usual.

Where possible, noisy work will be completed in the early evening so that overnight noise is kept to a minimum.

This work is subject to favourable weather conditions, for example heavy rain may affect the progress.

The A36 is the most direct route from Bath to Southampton. It's mainly single carriageway and runs for approximately 63 miles through various villages, towns and cities. Parts of the route date back to Roman times.

Cracking has been observed in the southbound section of the footpath running between Limpley Stoke and Monkton Coombe. The extent of the cracking lies within the Bath, Somerset and Wiltshire boundaries. We're currently carrying out detailed surveys to fully understand the scale of the geological defect and monitor movement and groundwater levels within the slope. Safety is our number one priority and traffic management will remain in place to safeguard pedestrians and motorists until our surveys are complete.

A36 Limpley Stoke - March 2022 update

A36 Limpley Stoke - February 2023 update

 

Updated - Tuesday 18 June

We currently have temporary traffic lights and a reduced speed limit on the A38 near Bodmin following damage to a stone bridge parapet.

Parapets on the bridge over the River Fowey near Bodmin Parkway station were badly damaged after a three-vehicle collision on Saturday afternoon (15 June).

To ensure the continued safety of drivers using the bridge, while keeping it open to traffic, temporary traffic lights have been installed, along with a 40mph speed limit.

We’re working with our maintenance partners to get repairs completed as soon as possible, while ensuring we protect the river below and members of the travelling public.

We’ll be setting up scaffolding later this week to allow us to safely access the outer side of the bridge – where the main damage is – to start our repairs.

Once the scaffolding is in place, we’ll start work to repair the parapets. This is expected to take up to 10 days.

The temporary traffic lights will need to stay in place until our work is complete, currently planned to be by Sunday 30 June.

We advise that drivers using this route plan ahead, allow more time for journeys, and to find alternative routes if at all possible. Thank you for your patience and understanding while we’re work to make the bridge safe.

The planned closure of the A38 Glynn Valley between Turfdown Cross and Twelvewoods roundabout on Sunday 23 June from 4am to 10am will go ahead as planned. We’ll use this as an additional opportunity to expedite repairs on the River Fowey bridge.

We’ll soon be carrying out routine inspections and surveys of the cliff faces along the A38 Glynn Valley.

We normally complete this type of work overnight, however on this occasion we have to complete the surveys in daylight. As the road will be need to be closed to keep everyone safe, we’ll be doing the work in June when the days are longer. We’ll start at 4am and get the road reopened as soon as possible, by 10am at the latest.

  • Closure information

Sunday 23 June, 4am to 10am: the A38 will be closed between Turfdown Cross and Twelvewoods roundabout (at the junction with the A390 at Dobwalls). 

If we are unable to complete our work on the date above, we’ll also have the road closed on Sunday 30 June from 4am to 10am. We’ll post more details here. 

Access will be maintained for residents. 

We’ll soon be carrying out resurfacing and improvements on the westbound A38 Liskeard Bypass.

  • Closure information

The A38 Liskeard Bypass westbound will be closed between the A390 junction and B3254 junction (Moorswater) weeknights from Monday 8 to Tuesday 16 July between 9pm and 6am each night.

A diversion will be in place via the A390 and B3254.

Access will be maintained for properties with direct access from the A38 westbound within the closure – please approach the closure gate.

This work is subject to favourable weather conditions, for example heavy rain may affect the progress.

A38 Glynn Valley will be closed overnight for routine maintenance from 8.30pm in the evening to 6am the following morning:

2024

  • 18 to 22 March
  • 18 to 22 November

2025

  • 17 to 21 March
  • 17 to 21 November

Please note these dates may be subject to change.

When overnight closures are in place, please use the following diversion:

Saltash Tunnel will be closed overnight for routine maintenance from 8pm in the evening to 6am the following morning:

2024

  • January 9, 10 and 11
  • April 9, 10 and 11
  • July 9, 10 and 11
  • October 8, 9 and 10

2025

  • January 7, 8 and 9
  • April 8, 9 and 10
  • July 8, 9 and 10
  • October 7, 8 and 9

Please note these dates may be subject to change.

UPDATE: April 2024

  • Due to unforeseen circumstances which have led to changes in our programme of work, we're now expecting to complete these works in May rather than March, as originally published.

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As part of our commitment to safety and air quality, we will shortly begin works to permanently reduce the speed limit between Saltash Tunnel and Carkeel roundabout, from 70mph to 50mph. Average speed cameras will be installed to enforce the 30 mph through the tunnel and we’ll also install average speed cameras on the diversion route through Saltash (the B3271, North Road).

This stretch of the A38 is prone to a high number of shunts and near misses as motorists try to reduce speed on the approach to the tunnel or roundabout. Reducing the speed limit will improve safety and alleviate the need for heavy braking, which in turn should improve air quality.

This is part of a larger package of work affecting Saltash Tunnel, we’ll write with further details nearer the time.

 

Traffic management

We’ll work overnight Monday to Friday when traffic flows are lowest. Work will take place from 8pm in the evening to 6am the following morning.

  • 18 to 30 September – overnight closures of Saltash tunnel
  • 2 to 24 October – overnight closures of Saltash tunnel and up to Carkeel roundabout
  • 25 October to 7 November – overnight 2-way traffic lights will be in place on the B3271/North Road

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

Please note: all enquiries should be directed to National Highways, and not to Tamar Bridge which is independently owned and operated by Cornwall Council and Plymouth City Councils.

Update - Wednesday 8 May

Our teams have successfully completed emergency embankment and barrier repairs following the recent landslip.  The A40 was fully reopened at 8.45pm on Tuesday 7 May, slightly ahead of our original planned reopening.

We’d like to take this opportunity to thank everyone for their patience whilst these urgent repairs were carried out.

We’re carrying out inspections of the post tension structure at M4 junction 17 Stanton St Quintin. This includes surveys both underneath the bridges that pass over the M4, and the roundabout structure above.

We’ll complete as much work as we can overnight when traffic flows are at their lowest, however we’ll need some lane and hard shoulder closures during the day to carry out the work safely.

Please note, unforeseen circumstances such as adverse weather conditions may mean changes to the above dates. We’ll be providing updates here as work progresses.

  • Closure information – updated Tuesday 4 June

We’ve completed our work on the west deck, and have moved to the east deck.

A lane will be closed on the east deck above the motorway (between the M4 eastbound entry slip and the M4 westbound exit slip) from 6am each Monday morning until midday on Fridays. There will be no lane closures in place over the weekend.

There will be some overnight lane closures on eastbound M4 within junction 17 during the week commencing Monday 17 June to complete works on the underside of the structures and remove scaffolding – at least one lane will remain open.

There will be no more lane closures on the westbound carriageway. 

We’re on track to complete the work by end of June 2024.

We’re carrying out resurfacing and improvements on the M48 westbound between the Awkley Interchange (M4 junction 21) and junction 1 (Aust Interchange).

This will maintain safety and improve the journey for road users, while preventing the need for unplanned closures.

  • Closure information

The westbound M48 will be fully closed between the M4 Awkley Interchange and junction 1 overnight from Saturday 15 June to Monday 1 July, 8pm to 6am each night.

  • Diversion

During the closures a diversion will be place from the Awkley Interchange via the M4, M49, A4 and A403. The Severn Bridge will be open as usual.

Please plan ahead and allow extra time for your journeys.

This work is subject to favourable weather conditions, for example heavy rain may affect the progress.

We’ll soon be carrying out resurfacing and improvements on the M5 between junction 13 (Stroudwater Interchange) and junction 15 (M4 / Almondsbury Interchange).

This will maintain safety and improve the journey for road users, while preventing the need for unplanned closures.

  • Closure information - updated on 13 June

There will be lane closures on the southbound M5 between junction 13 and junction 15 weeknights from Monday 3 to Thursday 27 June, 8pm to 6am each night. A lane will remain open to traffic.

The southbound exit slip at junction 14 (Falfield Interchange) will be fully closed overnight, 8pm to 6am, on Thursday 13, Friday 14, Monday 17, Tuesday 18 and Wednesday 19 June. To exit the M5 during the closures, please continue to junction 16 and join the northbound carriageway to return to junction 14.

The southbound entry slip at junction 14 will then be fully closed overnight, 8pm to 6am, on Friday 14 and Monday 17 June. A diversion will be in place via the A38 to junction 16.

There will be no access to the Michelwood Services from the southbound carriageway overnight (8pm to 6am) on Friday 21, Monday 24 June and Wednesday 3 July.

We’ll also be resurfacing the northbound entry slip at junction 14. The slip will be closed overnight (8pm to 6am) on Friday 28 June, Monday 1, Tuesday 2, Wednesday 3 and Thursday 4 July. To join the M5 during the closures, please use the southbound carriageway to travel to junction 16 and where you can join northbound. There will be lane closures during these dates but a lane will remain open to traffic.

We’re carrying out surveys and investigations on the M5 around St Georges Bridge, located near junction 21 for Weston-super-Mare, to help plan for future bridge repairs and safety improvements.

To keep everyone safe, we’re using a mixture of overnight lane and slip road closures.

  • Closure information

There will be regular overnight lane closures on both sides of the M5 around junction 21 and St Georges Bridge, Sunday to Thursday only, until the end of June. One lane will remain open for traffic.

You may also notice some temporary cones on the hard shoulder during the day.

We’re planning to start our improvements later this year, and we’ll provide more information closer the time.

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