Start date: October 2021 | End date: March 2025
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. These will include overnight lane, hard shoulder and slip road closures when required.
01-13 December 2024 (20:00 – 06:00):
Hard shoulder and lane 1 closure Eastbound between J43 and J42.
01-06 December 2024 (20:00 – 06:00):
Total closure of J43 Eastbound entry slip.
Total closure of J42 Eastbound exit slip.
01-04 December 2024 (20:00 – 06:00):
Hard shoulder and Lane 1 closure Westbound between J39 and J40.
03-06 December 2024 (20:00 – 06:00):
Hard shoulder and Lane 1 closure Westbound between J48 and J49.
02-11 December 2024 (20:00 – 06:00):
Hard shoulder and Lane 1 closure Westbound between J45 and J46.
02-06 December 2024 (20:00 – 06:00):
Total closure of J45 Westbound entry slip.
06-11 December 2024 (20:00 – 06:00):
Total closure of J46 Westbound exit slip.
10-19 December 2024 (20:00 – 06:00):
Hard shoulder and Lane 1 closure Westbound between J46 and J47.
10-14 December 2024 (20:00 – 06:00):
Total closure of J46 Westbound entry slip.
14-19 December 2024 (20:00 – 06:00):
Total closure of J47 Westbound exit slip.
15-16 December 2024 (20:00 - 06:00):
Total Closure of J41 Eastbound Entry Slip.
16-18 December 2024 (20:00 - 06:00):
Total Closure of J43 Eastbound Entry Slip.
Total Closure of J42 Eastbound Exit Slip.
18-19 December 2024 (20:00 - 06:00):
Total Closure of J46 Westbound Entry Slip.
Further programme details will be published closer to the time.
For further information, please contact Traffic Wales on 0300 123 1213 or via X @TrafficWalesS and Facebook @TrafficWalesS.