Case Studies A556 Improvement Scheme Highways Infrastructure Our Expertise A556 Improvement Scheme Bouygues Energies & Services, an Equans company, secured a partnership to implement a scheme designed to improve 7.5km of the A556 trunk road between Knutsford and Bowden, creating a modern dual carriage way. Geometric Structure Icon An abstract geometric structure with green and yellow sections. Case study A556 Improvement Scheme