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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.

M4 St Julians Viaduct Concrete Repairs Scheme

Start Date 27/04/2026  End Date 30/11/2026

Work to carry out essential concrete repairs to St Julians Viaduct between J24 and J25 will commence on 27/04/2026.

The works are currently programmed to commence on 27 April 2026 and are anticipated to be completed by 30 November 2026.

It is anticipated that the works can be completed without any full, scheme specific closures of the M4, however, the eastbound hard shoulder and Lane 1 will be closed intermittently between the hours of 20:00 and 06:00 throughout the scheme.

Diversions will not be required, as the works will involve closures of the eastbound hard shoulder and lane 1 only.

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