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Traffic Wales information line 0300 123 1213

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

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The Welsh Government’s traffic information service for motorways and trunk roads in Wales

Fibre Network Upgrade South and West Wales

Start date: October 2021 | End date: March 2024

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 A477, with works in the future on A40, A48 and M4.

For more information on traffic management see details below.

West Wales

A40 Bancyfelin - Llwynderw

  • Daytime lane closure westbound, Monday to Friday between 10:30 - 16:30 from September 5 to October 31.

A4075 Nash Fingerpost 

  • Overnight road closures on the A4075 junction with the A477 trunk road for five nights starting Monday October 3, between the hours of 18:30 - 07:00.

*Please note that these date are subject to change if weather impacts on the programme of work.

To complete these complex and long-term roadworks, at times we will need to use traffic lights, lane and full closures to control traffic flow during the works. These will be advertised closer to the time.

A4075 Nash Fingerpost Diversion

For further information, please contact Traffic Wales on 0300 123 1213 or via Twitter @TrafficWalesS.


Call the Traffic Wales information line
0300 123 1213

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

Contact us