Schedule of carriageway closures M4 Junctions 1-3

Further overnight maintenance on elevated section required

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Major maintenance works is required to repair deteriorating joints on the elevated section of the M4 between junctions 1 and 3.

Rain water collecting on the road surface has been leaking through to the joints and eroding the supports.  Repair works are essential to maintain the safe condition of the M4 elevated section for many years to come.

Work will take place overnight between 21:00 and 06:00 Monday to Thursday to ensure minimal disruption.

During this time there will be a series of slip road closures on the M4 between junctions 1 and 3 in each direction on alternate nights. A fully signed diversion route will be in place.

Schedule of carriageway closures

Date Carriageway Closed
November 19+20 Eastbound
December 15+16 Eastbound
December 17+18 Westbound


November 12, 2008