A30 Chiverton to Carland Cross

Upgrading the A30 single carriageway between Chiverton Cross and Carland Cross roundabouts. As part of our Strategic Road Network, the A30 is a road of strategic importance, which is why an £8m contribution from the European Regional Development Fund has been committed, as well as being identified as part of the Government’s Roads Investment Strategy.

Start date March 2020
End date 2023-24
Cost £330 million

Latest updates

  • 28 May 2021

    Cherilyn Mackrory MP visits A30 Chiverton to Carland Cross scheme

    Cherilyn Mackrory, MP for Truro and Falmouth, recently returned to the Chiverton to Carland Cross scheme, this time to find out more about the environmental aspects of the scheme.

    Following a general discussion on scheme progress, Ali Thomas, Environmental Manager for the scheme explained how the project will manage environmental activities during the construction phase and how biodiversity will be significantly enhanced post construction. This was followed by a presentation from Kristina Pill, the Archaeological lead, who detailed the extensive archaeological activities being undertaken to identify and preserve the rich Cornish heritage.

    Following her visit, Cherilyn Mackrory spoke to the Environmental Bill in the House of Commons, recounting her visit to the site. She said: ‘On the A30 between Chiverton and Carland Cross, in the midst of my constituency, Costain are delivering a new 8.7 mile dual carriageway for Highways England. 

    ‘Journeys on this part of the road are regularly delayed, congestion often brings traffic to a standstill, especially in peak holiday times and as a result the Cornish economy is being held back.

    ‘Following a recent visit to the project and a meeting with the team, it’s evident that they are committed to protecting nature’s net gain.  In fact, biodiversity, conservation and improvement are at the heart of the scheme. The project has a 10% biodiversity net gain target and is currently predicted to absolutely smash it.

    ‘The developers take note, this is possible. Costain and their Environmental Manager, Ali Thomas, are deeply committed and passionate to protecting the environment.

    ‘The landscape and ecological design proposals being developed, include the planting of nectar-rich wildflower meadows indigenous to Cornwall. Tree and hedge planting will take place to replace those lost.

    ‘Animal crossing points for otters, bats, badgers and other animals will be built along the road, with a variety of foraging, nesting and roosting opportunities for other species.’

  • 19 May 2021

    Work planned to improve access for wildlife on the A30

    The Chiverton to Carland Cross scheme is not just about improving safety, journey reliability and connectivity for local communities – it also goes for otters and other wildlife too.

    The new route has also been designed to protect the environment. As part of that work, a total of 33 multi-species crossing points are being constructed to assist the habitats and journeys of animals such as otters, badgers, bats and reptiles.

    When we carried out the ecological surveys of the area, we identified otter, badger and bat habitats to the north and south of the new route. As well as the construction of a ‘green’ bridge at Marazanvose, the new crossing points will include 11 underbridges, two overbridges, five drainage culverts and two dry tunnels – all allowing for the safe passage of animals.

    There will also be:

    • Nine crossing tunnels specifically for otters, and a new and specially designed sett for badgers.
    • Otter ledges in two of the culverts
    • 21 crossings designed to protect connectivity for bats
    • 12 miles of wildlife-proof fencing to guide animals toward these crossing points

    Work will start this summer to build the animal crossing points and existing environments are being sensitively replaced to limit the impact on any wildlife.

    In terms of further environmental work, the scheme will also see:

    • Over 28 miles of new drainage constructed to protect the local area and water courses
    • The construction of ponds to store and control the flow of surface water and address pollutants from the road
    • The construction of eight miles of Cornish hedge, representing a net gain of nearly seven miles of Cornish hedges
    • The planting of species rich grassland and trees native to Cornwall, blending the new with the old
    • No artificial lighting on the main route or at junctions, removing any light pollution from the new road
    • The construction of earth barriers and sound-absorbing fencing at key locations to reduce noise impact of the new road

  • 04 May 2021

    We value your feedback

    As work on the Chiverton to Carland Cross scheme progresses, we want to hear your thoughts about the scheme. You can visit our A30 Chiverton to Carland Cross feedback tool to have your say. 

    The tool includes an interactive map, so you can pinpoint any comments you may have about our work, or just give us general feedback.


    However, if you would like a direct response to your feedback, you can email us at A30ChivertontoCarlandCross@highwaysengland.co.uk

  • 21 April 2021

    Chiverton to Carland Cross virtual information room - an update

    As the Chiverton to Carland Cross scheme progresses, we've updated our virtual information room. This time, we have focussed on the environmental work that we are doing on the scheme.

    You'll be able to view detailed information about the project, and be able to ask our team any questions you have.

    Our project team will be available on the following dates:

    Wednesday 21 April: 1pm - 5:30pm

    Wednesday 28 April: 1pm - 5:30pm

    You can enter the virtual room here.

    Join the virtual event

  • 23 March 2021

    Environmental work - what are we doing?

    On the A30 Chiverton to Carland Cross scheme, we're committed to making the environment a priority. Over the duration of the scheme, we will be putting in a lot of effort to make sure we protect the environment for future generations.

    We spoke to Ali Thomas, Costain's Environmental Manager for the scheme, to tell us more about what she and her team are doing on site - you can watch the full video below.

  • 26 January 2021

    Job opportunities on the Chiverton to Carland Cross scheme

    The A30 Chiverton to Carland Cross scheme is on the lookout for companies in and around Cornwall to play a part and get involved with working on the scheme.

    As work begins to pick up, more opportunities will be available, both directly with the contractors, but also with the supply chain. The range of skills required will vary from plant operation to fencing to cleaning, accommodation and hospitality and everything in between.

    “2021 is going to be a big year for the A30 project”, said Josh Hodder, Senior Project Manager for the scheme. “We’re urging people and businesses within the local community to get involved. We are keen to offer job opportunities to local people, ensuring that we are fully inclusive of the diverse communities of Cornwall. 

    More details around job opportunities are available at https://www.costain.com/careers/ and any companies interested in working on the A30 project are asked to register their details at a30supplierenq@costain.com

    Local residents and businesses can also sign up for email notifications on this webpage and there is a dedicated community relations team available to answer any questions. The team can be contacted by email: A30ChivertontoCarlandCross@highwaysengland.co.uk.

    If you’d prefer to speak to someone, then you can phone the project helpline on 0845 600 2664 or Highways England on 0300 123 5000 and one of the team based on the A30 Chiverton to Carland Cross scheme will call you back as soon as possible.

  • 11 December 2020

    Progress update

    In recent months, there has been a lot of interest in the upgrading of the 8.7 mile section of the A30 between Chiverton and Carland Cross. On 31 March 2020 Costain were awarded the work, and we began work on the scheme. This has included the diversion of utilities, survey work to inform the detailed design and some site set-up work through the summer.

    A large amount of archaeological investigation has now taken place along the route, ensuring that the rich Cornish history is recorded and protected.

    In late November 2020, the scheme moved into its ‘main works’ phase - further site clearance work has been taking place and areas of land will be fenced to ensure that everyone is kept safe. Our Environmental Team continue to work hard to limit the impact of the scheme on our wildlife and plants.

    We’ll be putting out further information about our archaeological and environmental work as the scheme progresses.

    For more information, you can also sign up for our email notifications.

    We also have a dedicated Community Relations Team available to answer any questions you may have. The team can be contacted by email.

    If you’d prefer to speak to someone, then you can phone Highways England on 0300 123 5000 and one of our team based on the A30 Chiverton to Carland Cross scheme will call you back as soon as possible.

  • 17 August 2020

    Virtual public information event - Friday 21 August

    On Friday 21 August we are holding a virtual public information event in advance of work starting on site in September. The event will give you the chance to find out more about the scheme, what traffic management will look like and ask questions via a live chat feature.

    The room will be open from 8am on the Friday and there will be someone available to answer your questions until 8pm. The chat feature will open again on Saturday 22 August between 9am and 2pm. The room will then remain open for the entirety of the scheme, giving you the opportunity to follow progress as the scheme goes on.

    To get involved, visit this page on Friday morning and we will provide a link for you to enter the room.

  • 16 April 2020

    Detailed design work

    Now that we have awarded the contract to Costain, we will now start to work on the detailed design for the scheme. We’re aiming to start the main work in autumn 2020.

  • 16 April 2020

    Development Consent Order

    We were granted a Development Consent Order (DCO) on 6 February 2020 which allows us to build the design as submitted to the planning inspectorate (PINS).

    We awarded a contract for the work to Costain on the 31 March 2020. In March, we also began preliminary works for the scheme. This includes the diversion of utilities, survey work to inform the detailed design and some site set-up work as we move through the summer.

Project information


The Government’s Road Investment Strategy includes a commitment to improve the A30 between Chiverton Cross and Carland Cross roundabouts to dual carriageway standard. Funding for this scheme includes a contribution from the European Regional Development Fund of £8 million towards its development costs, with a further £12 million allocated for the construction phase.

Our proposal includes:

  • an 8.7 mile, high quality 70mph dual carriageway, connecting to the existing A30 dual carriageway at either end
  • replacement of Chiverton Cross roundabout with a new, two-level motorway style roundabout
  • a new, two-level partial junction at Chybucca, with west-facing slip roads connecting to the new dual carriageway
  • replacement of the existing roundabout at Carland Cross with a two-level motorway style junction
  • new bridges and accesses across the new road and the old road
  • retention of the existing A30 for local traffic

You can find more information about the proposal on our consultation page.

Improving the A30 between Chiverton and Carland Cross is incredibly important for Cornwall’s future. It's the only remaining stretch of single carriageway on the A30 between Camborne and the M5 at Exeter; journeys on this part of the road are regularly delayed, congestion often brings traffic to a standstill, and as a result the Cornish economy is being held back.

For local people, particularly during the summer season, the simple act of getting to a neighbouring village can lead to unacceptably long and unreliable journeys, while opportunistic rat runners pose increased risk of accidents in their villages.

This summer we carried out research to gather insight on how it feels to travel to, from and around Cornwall during peak season. Some of our visitors' experiences are captured in this video.

You can view our fast facts document to find out more.

The objectives of the scheme are to:

  • reduce congestion
  • unlock growth
  • connect communities
  • improve safety, operation and efficiency
  • protect the environment
  • minimise disruption during construction


The STEAM project

Our schools project in the area is designed to help children and young people understand science, technology, engineering, the arts and maths (STEAM) in the context of the A30 Chiverton to Carland Cross road scheme.

Through a series of interactive sessions relating to the work of our team (which comprises engineers, designers, environmental and traffic experts, scientists and communications specialists) we hope to bring school subjects to life for students, showing how the things they learn in school apply in the real world.

If you're a parent or teacher interested in finding out more about the STEAM project, please email the project team: A30ChivertontoCarlandCross@highwaysengland.co.uk

Designated funds

We've been looking at a number of projects with an environmental and cycling safety focus that we’re planning to deliver over the coming months. Known as designated funds projects, these mini-schemes will be carried out completely separately to the A30 Chiverton to Carland Cross improvement scheme.

You can find out more about these projects, including how they're funded, approved and delivered by visiting our Designated Funds page.


The DCO process was established by the Planning Act 2008 and is used for certain large and complex schemes (including highway improvements) that have been designated as a Nationally Significant Infrastructure Project (NSIP) by the Government.

The benefits of the DCO process include extensive pre-application consultation, detailed analysis, including a full Environmental Impact Assessment, and examination by an independent inspector before the final decision is made.

The Secretary of State for Transport granted development consent for the A30 Chiverton to Carland Cross Development Consent Order (DCO) on 06 February 2020. Links to key DCO documentation can be found below:

The made DCO is Statutory Instrument 2020 No. 121 and is available to view at legislation.gov.uk.

Development Consent Order – Requirements Register

Requirements are conditions that have been included in the DCO, which control how the project must be implemented (constructed and maintained). Implementing the DCO in accordance with these conditions involves completing consultation and approval processes that have been defined in the DCO. These processes are referred to here and in the DCO as “discharging” the requirements.

This Requirements Register is a live document and will be updated as the process to discharge the requirements progresses.

The latest version will always be published below:

View the Requirements Register.

This register will be maintained for three years following completion of the project. The register sets out:

  • each requirement
  • whether the requirement needs approval by the Secretary of State (or other duty holder)
  • whether any approval has been applied for or given

Traffic information

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

Sign up for updates!

Keep up to date with what's happening on this scheme by signing up to our updates.