National Highways Important roadworks information

A1 Brampton Hut Roundabout – Drainage kerb upgrade and resurfacing

We’re planning to carry out essential repairs and maintenance at the A1 Brampton Hut roundabout. We’ll improve and strengthen the drainage kerbs, resurface the road and replace the road markings and traffic signal sensors. Once complete, these improvements will help surface water drain away more effectively and reduce the risk of flooding.

We plan to complete this work in phases over eight weeks starting on Monday 28 September. We will work overnight between 9:30pm and 5am on weeknights and one full weekend, weather permitting.

Closures and diversions

To carry out the work safely, we will need to close parts of the A1 Brampton Hut Roundabout and A141 eastbound link, and divert traffic as follows:

 

Closure?	Date?	Diversion?
Phase 1 A1 Northbound exit slip and entry road into services. The exit from the services will remain open.	Monday 28 September to Wednesday 14 October 2026   Monday – Friday 9.30pm – 5am	A1 northbound traffic will continue north exit the A1 at Alconbury (B1043), rejoin the A1 southbound to exit at Brampton Hut Interchange.
Phase 2 A141 eastbound link between A14 junction 21 and Brampton Hut Roundabout. Please note, dates for phases 1 & 2 will run in parallel.	Monday 28 September to Friday 16 October 2026   Monday – Friday 9.30pm – 5am	Traffic wishing to join the A141 eastbound will join the A14 westbound at J21. Travel west to J16 (Catworth Interchange) then rejoin the A14 eastbound. Travel east on A14 towards J23 (Ermine St Interchange), exit and return westbound. At A14 J22, join the A1 northbound and continue to follow the above diversion for phase 1 to exit at Brampton Hut Interchange.
Phase 3 Inner lane of Brampton Hut Roundabout (north and west quadrant)	Monday 12 October to Thursday 19 November 2026   Monday – Friday 9.30pm – 5am	From Brampton Hut Roundabout, traffic wishing to join the A1 northbound or A141 eastbound towards Huntingdon will travel west on the A141 link towards A14 J21. At the roundabout return east on the A141 link towards Brampton Hut Roundabout. Take the A1 northbound entry slip. For A141 east to Huntingdon, exit the A1 at Alconbury (B1043), rejoin the A1 southbound to exit at Brampton Hut Interchange and join the A141 eastbound.

We will be carrying out a fourth phase, which will require a full weekend closure of the Brampton Hut Roundabout from 9.30pm Friday 20 November until 5am Monday 23 November. We’ll write to you again with more details.

For the duration of the works a lane closure will remain in place on the roundabout during the day for safety reasons and to protect the work area.

Please note emergency vehicles will have access through the works with caution.

Maps of the diversions can be found below.

How to find out more 

To find out more about road improvements we’re carrying out across the East of England, please visit our website at https://nationalhighways.co.uk/our-work/

If you would like more information, please contact us on 0300 123 5000, or by email at info@nationalhighways.co.uk.

Yours faithfully

 

Gemma Timson

Project Manager

Operations East, Scheme Delivery Team

Phase 1 A1 nortbound exit slip closure –

Phase 3 inner Lane of Brampton Hut (north and west quadrant) – Diversion route