A303 Stonehenge timeline

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Road Investment Strategy announced
A303/A358 corridor schemes are included
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Route options assessed
Options for the A303 Stonehenge (Amesbury to Berwick Down) scheme are evaluated by National Highways.

Find out more in our Non-technical summary
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Preferred route announced
The Secretary of State for Transport announces the preferred route for the scheme, including a twin-bore tunnel.

Read more on the preferred route.
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Statutory consultation
National Highways holds a second public consultation, asking for feedback on design proposals for the preferred route.
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Development Consent Order (DCO) application
National Highways submits application for DCO to the planning inspectorate.
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Supplementary consultation
A supplementary consultation takes place, covering design changes made in direct response to feedback received earlier in the year.
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People register with the Planning Inspectorate as an interested party and make formal representation about the scheme.

Read more on the National Infrastructure Planning website.
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Public examination
A panel of inspectors examines the application. People who have registered as interested parties can submit written representations and ask to speak at public hearings.

Read more on the National Infrastructure Planning website.
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After the examination, the Inspectors complete their report and make a recommendation to the Secretary of State.
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The Secretary of State grants development consent on 12 November 2020.
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Preliminary works
Wessex Archaeology and Octavia are announced as the preliminary works contractors.
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Statement of Matters
In November 2021 the Secretary of State for Transport publishes a letter asking for information to help him reconsider the DCO application.
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Judicial review
A legal challenge to the decision to grant development consent is made in December 2020. The High Court makes its judgement in July 2021, reversing the decision and quashing the DCO.
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Re-determination process
In 2022 information is submitted to the Secretary of State for Transport to support the re-determination process.

Visit the planning inspectorate’s website for more info, including about the next steps.