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Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.
Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.

South and West Wales: Fibre Network Upgrade

Start date: October 2021 | End date: March 2025

fibre network trench

An upgrade and extension scheme to the road’s fibre optic communications network is planned in South and West Wales. Works are currently taking place on the M4.

The works programme has overrun due to unforeseen circumstances. For more information on the latest traffic management see details below.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required. 

11 - 12 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

23 - 24 January 2025 (20:00 - 06:00): 

Eastbound lane 1 and hard-shoulder closed.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required. 

11 - 14 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

21 - 24 January 2025 (20:00 - 06:00): 

Eastbound lane 1 and hard-shoulder closed.

Total closure of J41 eastbound entry slip road.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required.

14 - 15 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

15 - 22 January 2025 (20:00 - 06:00): 

Eastbound lane 1 and hard-shoulder closed.

Total closure of J43 eastbound entry slip road.

Total closure of J42 eastbound exit slip road.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required.

09 - 10 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

Total closure of J46 westbound entry slip road.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required. 

06 - 11 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

Total closure of J47 westbound exit slip road.

10 - 11 January 2025 (20:00 - 06:00): 

Total closure of J47 westbound entry slip road.

Total closure of J46-J47 westbound.

There will be a series of works at various locations on this section of the M4 from November 2024. These will include overnight lane, hard shoulder and slip road closures when required.

24 - 29 January 2025 (20:00 - 06:00): 

Westbound lane 1 and hard-shoulder closed.

For further information, please contact Traffic Wales on 0300 123 1213 or via X and Facebook.