Important roadworks information M11 northbound junction 12 exit slip road – drainage and CCTV investigation work

Important roadworks information

M11 northbound junction 12 exit slip road – drainage and CCTV investigation work

I am writing to tell you that we plan to carry out drainage and CCTV investigation work on the M11 northbound junction 12 exit slip road. Once complete, the road will be able to better disperse surface water and will be less prone to flooding.

We plan to complete this work over three nights starting on Friday 23 October 2026. We will work between 8pm and 6am only, weather permitting. 

Closures and diversions

To carry out the work safely, we will need to close the M11 northbound junction 12 exit slip road, and divert traffic as follows:

·       Traffic will continue northbound on the M11 

·       Exit the M11 at junction 13

·       At the traffic lights turn right onto Madingley Road 

·       At the roundabout turn onto Queens Road

·       Then turn right onto Newnham Road

·       Then turn left onto the A603 Barton Road and follow to the M11 junction 12.

Emergency vehicles will have access through the work with caution.

A map of the diversions can be found below. 

How to find out more

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

Yours faithfully

 Tom Bevan

Service Delivery Manager 

Operations East, Service Delivery Team