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Turner & Townsend to cost manage Stonehenge tunnel

a303 stonehenge

Turner & Townsend has won a deal with Highways England to provide commercial services for the A303 upgrade, which includes the Stonehenge road tunnel.

The deal is for three years and will see the consultancy undertaking work including estimating, benchmarking performance, commercial reporting and cost management taking the scheme into construction.

Highways England is currently undertaking a consultation on the scheme. The £1.6bn A303 Stonehenge tunnel project is one of the most complex and controversial projects Highways England has undertaken. It involves building a 2.9km long twin-bore tunnel through the World Heritage Site with portals inside its boundaries.

Highways England project director for the A303 Stonehenge scheme Derek Parody has said that the scheme is already straining against its £1.6bn affordability limit set by government.

A report by the Infrastructure and Projects Authority (IPA) last year gave the project a red rating, meaning that unless urgent action is taken, it could be undeliverable. In October the rating was changed to amber/red to reflect increased confidence after changes were made to the complex project. The color-coded ratings show confidence in a project’s delivery.

Aecom, in partnership with Mace and Mouchel, was appointed last year to develop an initial design, manage a Development Consent Order application and provide technical assurance for detailed design and construction of the stretch of road.

Turner and Townsend has also been appointed to deliver the next phase of two Highways England smart motorway upgrades, providing commercial and programme management for improvements to the M6 between junctions 21a and 26 and M62 between junctions 10 and 12. 

Turner & Townsend director Gary Healey said: “The A303 upgrade is one of the most significant schemes set to be delivered under the government’s Road Investment Strategy – creating a better experience for road users, improving economic connectivity across the south, and reducing the visual impact of this key arterial route on Stonehenge itself.

“Our previous experience working on major programmes, including smart motorways, sets us in good stead to support Highways England in delivering these schemes in a way that optimises commercial performance and drives productivity on site.”


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