M25 Junctions 21a-23 Works: 19 September to 3 October & 17 to 24 October 2011

Post date: Sep 18, 2011 9:33:09 PM

This is to advise you that the Highways Agency has scheduled overnight works to alter the traffic management layout on both the clockwise and anticlockwise carriageways of the M25 between junctions 23 and 21a. The work will be carried out in two separate stages. 

The first stage will take between 7 and 10 nights and will commence on the 19 September and will take two weeks to complete. The works will be carried out overnight between 10pm and 5am. 

It is necessary for us to complete this work during the night as the work requires one lane to be closed in order for the works to be completed within Health and Safety Guidelines. Lane closures are only permitted at night when the traffic flow is lighter. 

The following activities will be carried out 

Once the above has been removed, work will include 

n October, work will then begin to upgrade the central reservation between the River Colne crossing and junction 21a. For approximately 7 consecutive nights from 17 October, changes to the road layout will involve:

Please note that this work will involve overnight lane and slip road closures.  The Highways Agency website carries a schedule at this link http://www.highways.gov.uk/roads/projects/23733.aspx which may be helpful in planning your journeys. 

The Local Authorities are aware of this work and night-time work has been agreed under Section 61 of the Control of Pollution Act 1974. 

Please use the following contact details if you have any queries. 

Highways Agency Information Line 0300 123 5000 


Highways Agency, 5 Broadway, Broad Street, Birmingham B15 1BL 



Jo Bray 

Community Relations Officer 

M25 Widening Junction 16-23 

Skanska Balfour Beatty Joint Venture 

The M25 junctions 16-23 widening project is being carried out by Skanska Balfour Beatty Joint Venture for Connect Plus working on behalf of the Highways Agency.