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Concept
Stonehenge road tunnel
Résumé
The Stonehenge road tunnel is a planned tunnel in Wiltshire, England, drawn up by National Highways to upgrade the A303 road. It would move the A303 into a tunnel under the Stonehenge World Heritage Site, completing the removal of traffic begun with the 2012 closure of the A344 road. The wider project was designed to improve the landscape around the monument and to improve safety on the A303, and was part of proposals to change the site in other ways including moving the visitors' centre. In 2020, the project was expected to cost £1.7 billion.
The A303 primary route is one of the main routes from London to the South West of England. Sections have been upgraded to dual carriageway status, though one third of the road remains single carriageway. Traffic flows on the A303 between Amesbury and Winterbourne Stoke (the section including Stonehenge) are above the capacity of the road and the Highways Agency expressed concern about safety on this road and the A344.
The two roads passed close to Stonehenge and land owned by the National Trust with the A303 passing directly south and the A344 directly to the north, with a pedestrian tunnel passing from the Stonehenge visitor centre to the site underneath this road. As part of the development of the proposals, over 50 routes were considered by the Highways Agency.
Since 1991, 51 proposals have been considered for improving the A303 in the area and to remove it from the Stonehenge site.
As of November 2020, the approved planning application comprises:
A bypass taking the A303 north of the village of Winterbourne Stoke, with a viaduct over the Till valley
A new junction between the A303 and the A360 Devizes-Salisbury road, west of the existing junction and outside the Stonehenge World Heritage Site
A tunnel taking the A303 past Stonehenge, about long
Expanding the junction between the A303 and A345 near Amesbury.
In 1995 it was proposed to build a tunnel for the A303 underneath the World Heritage Site. A conference agreed on a 2.
Source officielle
À propos de ce résultat
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