Stonehenge road tunnel

The A303 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^[3] and the Highways Agency expressed concern about safety on this road and the A344.^[2] The two roads currently pass through Stonehenge and land owned by the National Trust^[4] 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.^[5]

Since 1991 51 proposals have been considered for improving the A303 in the area and to remove it from the Stonehenge site.^[6]

In 1995 it was proposed to build a tunnel for the A303 underneath the World Heritage Site.^[7] A conference agreed on a 2.5-mile (4 km) bored tunnel, however the government instead proposed a cut and cover tunnel, with plans being published in 1999.^[7] These plans were criticised by the National Trust, Transport 2000 and others who expressed concern that it would cause damage to archaeological remains along the route, destroy ancient sites and not achieve an improvement in the landscape.^[8][9]

In 2002, new plans for a bored tunnel of 1.3 miles (2.1 km) were announced by the Secretary of State for Transport as part of a 7.7 mile (12.5 km) plan to upgrade the A303 to dual carriageway status, with the tunnel estimated to cost £183m.^[10] This proposal brought further protests from the National Trust, English Heritage, UNESCO, CPRE, the Council for British Archaeology^[11] and local groups as the tunnel approach cutting would cut in two a prehistoric track way between Stonehenge and a nearby river. These groups are calling for a tunnel at least 2.9 km long, which would, while being sited within the world heritage site, clear most of the known major artefacts, claiming that if the government goes ahead with the 2.1 km tunnel there may never be another chance to remove the road from the site completely.^[12]

In 2004 a public enquiry required under the Highways Act 1980 was conducted by a planning inspector, Michael Ellison. His enquiry agreed that the government proposals were adequate.^[4] The report stated:

The physical loss of archaeological remains, the changes to the land form in these sections, and the scale of the new highway would adversely affect the authenticity of the site and more than offset the benefits of the proposed tunnel in the central area. The published scheme would represent the largest earthwork ever constructed within the World Heritage Site; a feature that would contribute nothing to the authenticity.

but concluded:

...after taking into account the requirements of local and national planning, including the requirements of agriculture, that it is expedient for the purpose of improving the A303 between points A and B on the plan referred to in the Line Order for a trunk road to be provided along the route shown in the Line Order

On 20 July 2005 the tunnel scheme was withdrawn by the Government, partly due to rising costs of construction, which had doubled to £470 million.^[13] The Highways Agency continued to list the project as planned, but gave 2008 as the earliest date for the start of construction.^[2]

On 31 October 2005 a Government steering group was set up to look at possible solutions,^[14] with the aim of choosing an "option in keeping with the special requirements of the location that is affordable, realistic and deliverable." The review presented five options — the published tunnel scheme, a cut and cover tunnel, a 'partial solution' (involving a roundabout but maintaining the current road), and two overland bypass routes.^[15][16] Some of these plans have been criticised as being damaging to both archaeology and biodiversity, including the stone curlew, barn owls, bats, and the chalk grassland habitat.^[17] Five options were considered including diverting the A303 further away and only closing the A344. The group expected to produced a report in 2006, taking into account the results of public consultation which started on 23 January 2006 and ran until 24 April 2006.^[2]

On 6 December 2007 Roads Minister Tom Harris announced that the whole scheme had been cancelled due to increased costs of £540 million. English Heritage expressed disappointment whilst Save Stonehenge were pleased with the outcome. The Highways Agency will continue to work on small scale improvements to the A303.^[18]

A revised proposal, of closing the A344 road between Stonehenge Bottom and Byway 12, and closing part of the B3086 was put forward in 2010. This also included a proposed new roundabout to replace the current Airman's Corner junction and improvements to the Longbarrow Roundabout on the A303.^[19][20]

A planning inquiry to consider the proposal was started in June 2011.^[21] In July 2012 work began on the £27m project which involved the closure and grassing over of part of the A344 and the closing of the underpass beneath the road at the monument entrance.^[22]

In December 2013 the new visitors' centre at Airman's Corner on the A360 was opened. Shuttle buses take visitors to the monument along the old A344 road, a distance of approximately 2.4 km.

According to documentation released in response to a Freedom of Information request, in January 2012 local councils and the South West Local Enterprise Partnership met to discuss their proposals for "a consortium of Local Authorities to develop and take forward a new scheme for improvements to the A303/ A358/A30" and to "develop an effective lobbying framework so that we can take a planned approach to raising our profile both nationally, regionally and locally".^[23] In September 2012 a survey conducted by Somerset County Council found that more than 90% of commuters and businesses in the South West back an upgrade of the A303.^[24] In April 2013 it was reported that the chancellor was giving consideration to "...adding lanes to the A303 – known all too well to holidaymakers – which runs from Basingstoke through Somerset (past Stonehenge) to the South West of England..."^[25]

• Stonehenge planning enquiry website
• Highways Agency A303 Stonehenge site
• The National Trust's proposals for Stonehenge
• Council for British Archaeology’s Stonehenge/A303 timeline
• Save Stonehenge
• 'Stonehenge: Celebration and Subversion' by Andy Worthington (chapter on Stonehenge road tunnel)
• 'Our Plans for Stonehenge:English Heritage
• 'Work around A303 traffic jam'

51°10′36″N 1°49′35″W / 51.1767°N 1.8265°W / 51.1767; -1.8265