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A428 Upgrade

Planning has been approved to upgrade the final stretch of single carriageway between Cambridge and Milton Keynes.

Grant Shapps, Secretary of State for transport has signed the development consent order to enable National Highways to proceed with work on the A428 Black Cat to Caxton Gibbet improvements.

Skanka were awarded a £507m contract by National Highways in March 2021 to design and build a new 10 mile dual carriageway to connect the roundabouts at Black Cat and Caxton Gibbet. Mott MacDonald is Skanskia’s engineering design partner on the scheme.

The project will include a three tier junction at Black Cat roundabout to enable traffic to flow freely on the A1 by travelling under the junction and on the new dual carriageway over the junction. There will also be junctions built at Caxton Gibbet and Cambridge Road which will connect the new dual carriageway to the existing A428 and a new Roxton Road link to connect Wyboston and Chawston.

Bridges are also to be built over the new dual carriageway to carry Roxton Road, Barford Road and Toseland Road. There will also be further bridges over the River Ouse and East Coast Main Line railway.

This announcement has been welcomed by the many communities who have long campaigned for improvements. The proposals to upgrade the route between the A1 Black Cat Roundabout and A428 Caxton Gibbet roundabout with a new 10 mile dual carriageway together with junction improvements will be good for business and jobs.