National Highways has selected Costain and Mott MacDonald as Delivery Assurance Partner for the A303 Stonehenge (Amesbury to Berwick Down) Improvements Scheme.

In this leading consultancy role, Costain will utilise the full range of its capabilities alongside its JV partner to manage design and construction of a new dual carriageway and tunnel, replacing the existing single carriage road.

The scheme is an important milestone in the transformation of the UK’s infrastructure. It will improve the lives of people living in and travelling through the area through greater connectivity, provide a significant boost to the local economy and support national growth. Once complete, it will enhance the Stonehenge World Heritage site and the natural setting of the stones, while bringing environmental benefits by reducing congestion and increasing biodiversity around the site.

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Costain will play a significant role in ensuring the successful delivery of the works and its benefits. It will work closely with Mott MacDonald, supply chain partners, road users and the local community to implement efficient, practical solutions to the complex challenges the project presents. Costain’s combined expertise will allow it to proactively manage risk and drive a right first-time approach, leveraging technology and customer insights to drive efficiencies and inform best practice.

Sue Kershaw, Managing Director for Transportation at Costain, commented: "This award comes as a result of our strategy to bring together the whole range Costain’s capabilities to deliver for our customers and transform the performance of the UK's infrastructure ecosystem. It demonstrates the calibre of Costain’s growing consultancy expertise and the value of our differentiated proposition in the market. Together with our customers we will create connected, sustainable infrastructure that helps people and the planet to thrive. This is the second award for our long-standing strategic partnership with Mott MacDonald and evidences the delivery of our strategy in meeting the wider needs of our customers."