Upcoming Road Closures – Bedford Road, A1 northbound and A421 eastbound
National Highways have shared the following with us:
Upcoming Road Closures
Bedford Road, A1 northbound and A421 eastbound
What is happening?
We are writing to inform you about upcoming road closures and diversion routes around the Black Cat junction. These closures will take place from Friday 17 July to Tuesday 28 July 2026.
We’ll be carrying out a series of essential works at the Black Cat roundabout to support progress on the new junction and surrounding structures. To ensure the safety of road users and our workforce, planned road closures will be in place. While these temporary measures may cause some inconvenience, they will allow us to complete important activity efficiently and safely.
Our teams will be progressing several key pieces of work, including:
- installation of the central reserve at the Black Cat junction
- surfacing of footways
These improvements are vital to support the long-term upgrades planned for the junction, helping to improve safety, reduce congestion, and create smoother journeys for all road users. Full details of the closure dates, times and exact locations can be found on the following pages.
Update: Cancellation of planned A428 weekend closure
We’re writing to let you know that the planned weekend closure of the A428 between Tithe Farm, St Neots and Caxton Gibbet, previously scheduled from Friday 24 July to Monday 27 July 2026, will no longer go ahead at that time.
This closure has been cancelled and will be rearranged for a later date.
We will provide further details of the revised closure dates in due course once these have been confirmed.
Table showing upcoming closures

Diversion Maps
To make our information easier to access and more environmentally friendly, all diversion maps will now be available online only. This change ensures that residents and businesses can view the most up to date route information at any time from their computer, tablet, or mobile device. We encourage everyone to visit our website (A428 Black Cat to Caxton Gibbet Closures) or scan this QR code to view the latest maps and updates before travelling.
Keeping you updated
If you’d like more information about this work, then please feel free to contact us by calling the 24/7 National Highways Customer Contact Centre on 0300 123 5000.
Alternatively, you can email us on info@a428.co.uk or visit our website at www.nationalhighways.co.uk/a428 where you can sign up for future works information.
Yours sincerely,
The Community Engagement Team
For more information, please visit www.nationalhighways.co.uk/a428
