Six-month lengthy M4 work begins at this time and that is the listing of all closures

Editorial Team
4 Min Read


The works began at this time and are anticipated to complete by the tip of November 2025

The work will happen over six months(Picture: John Myers)

Main roadworks on the M4 which can be set to happen over the following six months started on Monday, and drivers ought to pay attention to exactly when and the place the works will trigger disruption.

Beginning at this time, the work will happen between junctions and 37 and 38 near Pyle, is claimed to be undertaken to ‘guarantee the protection and long-term resilience of the motorway’. The work consists of refurbishment being executed to 5 bridges alongside the aformentioned stretch of the M4.

The work has been described as ‘important’ to take care of security and forestall deterioration of the street.

The work, which is able to span half an yr, in 4 important phases as follows:

Preparatory works to arrange the contraflow system

Ranging from tonight and lasting till June 15, these embrace:

  • June 9 (8pm) – June 10 (6am) – In a single day closure westbound for one evening on the M4 between J37 Pyle to J39 Groes.
  • June 10 to 12 – (8pm to 6am) – In a single day closure in each instructions for 2 nights M4 between J37 Pyle to J39 Groes.
  • June 12 (8pm) – June 13 (6am) – In a single day closure westbound for one evening on the M4 between J37 Pyle to J39 Groes.
  • June 13 to fifteen – (8pm to 6am) – In a single day closure eastbound for 2 nights on the M4 between J38 Margam to J37 Pyle.

Part one – Central reserve works

This section will begin from June 15, 6pm, and final till July 16:

  • Part one – Central reserve works with visitors circulate diminished from three lanes to 2 lanes in every route
  • A 50mph velocity restrict will likely be in place throughout this time for security.
  • Additional particulars on later phases of works will likely be revealed nearer to the time.

The motorway will stay open alongside two working lanes in each instructions whereas the works happen.

The closures put in place will solely be in a single day, and are going to be well-signposted upfront. For our free day by day briefing on the largest points dealing with the nation, signal as much as the Wales Issues publication right here

To make sure the protection of drivers and staff, temeporary velocity limits can even be put in place.

As junctions 37 and 38 will operational throughout phases one to 4, no diversion route will essential.

Nevertheless, when the street is absolutely closed to put in visitors administration, drivers will likely be diverted by way of the A4229 and A48.

Motorists travelling west will likely be directed off the M4 at Junction 37, rejoining at Junction 39.

Cupboard Secretary for Transport and North Wales Ken Skates stated: “Fixing and sustaining our roads and making them extra resilient is a precedence for us.

“I perceive the works will trigger disruption and I would prefer to thank motorists for his or her endurance while the work is going down, nonetheless it is vital it’s carried out during times of drier and hotter climate to make sure it may be executed successfully.”

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