Important roadworks information: A11 Babraham to Six Mile Bottom


I am writing to tell you that we plan to carry out essential maintenance on the A11 between Babraham and Six Mile Bottom. This will involve safety barrier replacement, resurfacing and renewal of signs. This will ensure the A11 continues to remain in a safe and serviceable condition.

We plan to complete this work between Monday 6 March and February 2024. We will work between 8pm to 6am on weeknights only, weather conditions permitting.

Closures and diversions

To carry out the work safely, we will need to close parts of the A11, one direction at a time.

Strategic traffic will be diverted via the A14 and M11 southbound, with local traffic diverted as detailed below:



Local diversion

Worsted Lodge to Fourwentways

(Southbound closure)

Monday 6 March to Tuesday 2 May



Southbound traffic will exit the A11 just after Fleam Dyke and take Balsham Road / Cambridge Road northwest towards Cambridge. Travel south along Limekin Road / Cherry Hinton Road, then southeast along A1307 / Babraham Road. Then take third exit at the Fourwentways Roundabout to re-join the A11 Southbound. (Diagram 3)


Fourwentways to Six Mile Bottom 

(Northbound closure)

Tuesday 2 May to Friday 11 August

Northbound traffic will exit the A11 at Fourwentways and take the A1307 / Babraham Road northwest towards Cambridge. At the second roundabout, turn right to follow Cherry Hinton Road / Limekin Road, then right again to return southeast on Fulbourn Road / Cambridge Road / Dogget Lane / Balsham Road to pass through Fulbourn and re-join the A11 northbound. (Diagram 3)

Six Mile Bottom to Nine Mile Hill

(Northbound closure)





Wednesday 16 August to Monday 16 October

Northbound traffic will exit the A11 at Six Mile Bottom and take the A1304 towards Newmarket. At the roundabout travel west on the A1303, then join the A14 eastbound at junction 35 (Stow cum Quy) to continue north on the A14/A11. (Diagram 2)


Six Mile Bottom to Balsham Road  

(Southbound closure)

Tuesday 17 October to Wednesday 29 November

A11 southbound traffic will be diverted via the A14 westbound to junction 31a, to join the M11 southbound and continue their journey. Northbound traffic will follow the same route in reverse. (Strategic Diversion)


Granta Park to Stumps Cross  

(Southbound closure)

Thursday 30 November to Thursday 8 February

Southbound traffic will exit the A11 at Fourwentways Interchange and take the first exit onto A1307 / Cambridge Road then right onto Newmarket Road, travelling south towards Granta Park Roundabout. Exit roundabout onto A505 westbound towards Duxford and join the M11 at junction 10 to continue south. (Diagram 1).


Strategic Diversion

Diagram 1

Diagram 2

Diagram 3

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

If you would like more information, please contact us on 0300 123 5000, or by email at