Costain Group PLC

About Us

Founded in 1865, we improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet to thrive.

We bring together a unique mix of engineering solutions for increasingly complex problems. Our commitment to creating connected, sustainable infrastructure is core to all our activities within our four strategic markets of transport, water, energy and defence.

In Somerset, Costain has been appointed to design and build a new junction on the M5 motorway. Awarded through the Regional Delivery Partnership (RDP) framework, the contract is worth approximately £100m to Costain over a five-year period.

Junction 22A is a new motorway junction being constructed between Burnham-On-Sea and Bridgwater, in Somerset. It will provide access to the Gravity Smart Campus and £4bn gigafactory being developed by Agratas, which will be Britain’s biggest electric vehicle battery manufacturing facility.

The junction will consist of north facing slip roads and will alleviate congestion on the motorway south of the Huntspill river.

Costain’s role as the project’s delivery integration partner and main works contractor will see it design and construct the new junction before handing it over to National Highways upon completion. In its role, Costain will provide a range of best-in-class infrastructure services, including design, engineering, programme delivery and supply chain management. WSP will support Costain as design partner.