Costain announced that National Highways has appointed a Costain and Mott MacDonald joint venture as Delivery Assurance Partner for theA303 Stonehenge Improvements Scheme. In this consultancy role, Costain and its partner will manage the design and construction by the main contractor of a new dual carriageway and tunnel, replacing the existing single carriage road. The joint venture, as part of the National Highways integrated project team, will collaborate with the customer, main contractor, supply chain, road users and the local community to ensure the effective design and delivery of the A303 improvement works.

Once complete, the scheme will significantly improve the lives of people living in and travelling through the area, enhance the Stonehenge World Heritage site and the setting of the stones, while bringing economic and environmental benefits by reducing congestion and increasing biodiversity.