Latest news about major road projects

Regular updates for key projects, road closures or events are posted here but for up real time information follow us on our social media channels, Facebook (mkcouncil1) and Twitter (@mkcouncil)

Our highways service provider Ringway also regularly post updates, news and information on their Twitter account for MK, search for @ringway_mk


A421 upgrade  - Eagle Farm roundabout to Junction 13, M1

We're working with Central Bedfordshire Council to upgrade the A421 road between the Eagle Farm roundabout in Milton Keynes up to Junction 13 of the M1. This improvement project completes the dual carriageway that began with the Pinch Project between the Kingston and Eagle Farm roundabouts.

This stretch of the A421 road is used by almost 30,000 vehicles a day and with nearby development for both residential and industrial sites, this number is expected to significantly increase.

During the works there may be some road closures and diversion routes as essential work is carried out. This will normally be at off peak times such as overnight or at weekends. We will provide as much notice as possible to road users of any proposed closures. 

Sign up for A421 email alerts to get the latest information on this project and any A421 road closures at


Extension of road closure to Watling Street - from 27 January to 29 May 2020 the road closure on the V4 Watling Street will be extended up to and including Kiln Farm Roundabout.

The full closure will be from Crownhill Roundabout up to Kiln Farm Roundabout.

This additional section is being closed to enable major infrastructure works to take place along Watling Street and Calverton Lane as part of the Western Expansion Area development.

Summary of work taking place:

Junction 3 and Calverton Lane Diversion

  • Removal of two existing roundabouts and replacing them with one new roundabout
  • Permanent diversion of Calverton Lane
  • Major sewer diversions
  • Installation of new street lights
  • Updating the directional signs to show the new areas
  • Resurfacing the road
  • Reducing speed limit to 40mph with relevant signage

Junction 28 – signalised junction

  • New access into Whitehouse opposite the High Street, Two Mile Ash will be constructed
  • 4-way traffic light system will be installed
  • Redway crossing points
  • Major sewer diversions
  • Installation of street lights
  • Relocation of existing bus stops
  • Updating the directional signs to show the new areas
  • Resurfacing the road
  • Reducing speed limit to 40mph with relevant signage

During the extended closure there will be restricted access to the permanent traveller site and the kennels situated on Calverton Lane.

Diversion routes:

The existing diversion route has been changed to include the extended road closure.

The new diversion route will direct traffic to:

From Stony Stratford direction:

>H3 Millers Way

>V5 Great Monks Street

>H4 Dansteed Way


From Crownhill/TMA direction:

>H4 Dansteed Way

>V5 Great Monks Street

>H3 Millers Way


For Calverton Lane the diversion will be through The Wealds towards Stony Stratford and down Watling Street V4 until it meets Millers Way H3. These diversion routes will be clearly signed and we will advise all traffic to use these alternative routes rather than through the nearby estates.

If you have any questions or queries about these works contact


V4 Watling Street underpass

A major project to install an underpass linking the Western Expansion Area to the rest of MK is now in its final stages. Work will continue from early January 2020 to carry out the remaining tasks which will involve some additional road closures.

This has been a significant highways project with 15,500 cubic metres of earth being excavated throughout the course of the works and several different utility services supplying local residents and businesses to work around.

The underpass will provide a safe place for pedestrians and cyclists to use between the new Western Expansion area and existing estates of Crownhill, Two Mile Ash and Kiln Farm.

Here is a list of all the work taking place in 2020:


January (6-20)

Fairfields Roundabout lane closure (V4/H3) for Anglian Water to connect pipes.


January to May

From 20 Jan the V4 road closure will be extended from Fairways Roundabout (V4/H3) up to Kiln Farm Roundabout (V4/H2). This will include Calverton Lane which will have restricted access for residents only.

This will allow Anglian Water to lay a new pipe connection to Crownhill Roundabout. At the same time, the Western Expansion Areas developers will carry out essential work to Junctions 26 and 3 along the V4.

Upon completion of the Anglian Water works in May 2020, the new Whitehouse underpass will be opened.

The completion date has changed slightly as we have coordinated additional works requested by Anglian Water so that they can take advantage of the closed work site.

To find out more about the V4 work, visit the project webpage.

Last Updated: 23 December 2019