We’re proposing to upgrade the route between the Black Cat roundabout and Caxton Gibbet roundabout with a new 10-mile dual carriageway and a number of junction improvements. The proposed scheme is estimated to cost between £810 to £950 million and, if given the go ahead, will improve journeys between Milton Keynes and Cambridge, bringing communities together and supporting long term growth in the region.

You can find out more in our About the scheme page and watch our short scheme video.

A428 Black Cat to Caxton Gibbet improvements

What’s happening now?

Planning permission (called a Development Consent Order) has now been granted by the Secretary of State and over the next few months, we will be preparing for construction to start later in the year.   

To keep you fully up to date on what we are doing, we are planning some online Q&A sessions and face-to-face public information events later this year. We’ll be visiting venues around the local area and will be out and about with our mobile visitor centre. 

You can find more information about the development consent order decision here

Sign up for updates on the scheme here. 

This short video shows how road schemes are developed from instruction to construction.

Contact us

If you have questions or would like more information, please contact us:

Phone: 0300 123 5000

Email: info@A428.co.uk

Follow us on Twitter @A428Cat

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