The next weekend closure of the M4 is planned from 9pm on Friday 12 May through to 6am on Monday 15 May 2017* (57 continuous hours), with a contingency weekend proposed for Friday 2 to Monday 5 June 2017.
Delays will be expected during this weekend closure and it is advisable that you plan ahead of your journey or avoid this route where possible – depending on your final destination, we would advise you to allow an addition 30 to 40 minutes for your journey.