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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.

A470 Cwm Ffrwd Viaduct - Emergency Expansion Joint Renewal

Start Date: 27/10/2026 | End Date: 29/10/2026

Traphont Cwm Ffrwd Viaduct

Work to carry out emergency expansion joint repairs will commence on 27/10/2026 for 2 nights.

The work will be carried out over 2 nights between the hours 20:00 – 06:00 under a full northbound and southbound carriageway closure.

Tuesday (27/10/26) 

Northbound closure between Gellideg roundabout and Cefn Coed roundabout.

Wednesday (28/10/26) 

Southbound closure between Cefn Coed roundabout and Gellideg roundabout.

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