Upgrade of all the remaining single-carriageway sections of A303 between the associated works at Stonehenge and the Horton Roundabout at Ilminster. The new dual carriageway sections will be grade-separated and built to dual two-lane standard. From Ilminster, the A358 will be upgraded to reach the M5.
This scheme was withdrawn following the cancellation of the Stonehenge Tunnel scheme in 2010.
This scheme has been cancelled. We're no longer accepting updates or changes to this page.
Representatives from Somerset County Council are meeting with local MPs at Westminster today to discuss dualling more of the A303.
With thanks to Michael Pritchard for information on this page.