Mace has been appointed as the Complex Infrastructure Programme (CIP) Commercial Partner on delivery of the A303 Stonehenge between Amesbury and Berwick Down dualling scheme and the A428 Black Cat to Caxton Gibbet improvements.

The award follows Mace’s appointment to Lot 1 of the £420m National Highways framework for commercial and project management services last year.

The firm will deliver commercial services including cost consultancy and quantity surveying, as well as acting as a liaison between National Highways and its main contractors.

A three-way European joint venture between Spanish contractor FCC, Italy’s WeBuild and Austria’s BeMo Tunnelling was unveiled as winner of the Stonehenge tunnel job last month despite ongoing uncertainty about the project’s future.

The upgrade suffered a serious setback last July after the High Court ruled as unlawful transport secretary Grant Shapps’ decision to approve the Stonehenge Tunnel scheme against the recommendations of planning officials.

A fresh planning application is now awaiting redetermination by the transport secretary, following the quashing of the decision to grant the Development Consent Order.

Work on the A428 Black Cat to Caxton Gibbet improvements will see the construction of a new 10-mile dual carriageway and further junction improvements.  Skanska is main contractor on the £507m job.

Jason Millett, CEO for Mace Consult, said:  “This is a strategic win for Mace Consult and acknowledges the delivery expertise of our team.

“Acting as agile partners for National Highways, our key aim is to create better outcomes for our clients and the range of stakeholders on these significant projects.

“We pride ourselves on delivering distinctive value and challenging conventional thinking in our approaches.

“As a result, I’m confident that our hands-on approach to both these major infrastructure projects will help improve connectivity in these areas and make a tangible difference to these communities and their funders.”