Here are the details of all road closures affecting the M4 in the coming week (beginning Monday, December 11), with motorists being warned to avoid the area during closures. Several sections of the road are either fully or partially closed as a result of planned roadworks. With people planning trips for
Christmas events or visits, these closures are important to take note of. As well as a series of closures in Wales, including some already underway (those between J47 Penllergaer and J49 Pont Abraham) there are some important ones further east in
England. The Prince of Wales Bridge will be closed both eastbound and westbound at several points in the week, included under the list of closures in England. Please note that the dates listed here do not necessarily mean the closures will end by Friday, December 15 and some may be extended. Planned closures in Wales: The M4 between junction 23 Rogiet and the Prince of Wales Bridge will be closed in both directions for maintenance work between 9pm on Wednesday, December 13 and 6am on Friday, December 15 and one lane will be closed westbound overnight from 9pm to 6am between Monday, December 12 and Wednesday, December 13. The tunnel between junction 24 Coldra and junction 28 Tredegar Park will be closed westbound overnight between 8pm on Wednesday, December 13 and 6am on Thursday, December 14. The eastbound entry slip road at junction 26 Malpas will be closed between 8pm on Monday, December 11 and 1am on Tuesday, December 12. The M4 eastbound and entry slip road between junction 32 Coryton and junction 30 Cardiff Gate will be closed between 8pm on Wednesday, December 13 and 6am on Thursday, December 14 due to emergency work. The entry slip road at junction 44 Lon Las will be closed overnight from 8pm to 6am between Sunday, December 10 and Friday, December 15 due to environmental work. The M4 between junction 47 Penllergaer and junction 49 Pont Abraham will be closed in both directions overnight from 8pm to 6am between Friday, December 15 and Friday, December 22. Planned closures in England: The M4 eastbound between junctions 3 and 2, the junction 3 entry slip road and Heston Services entry slip will be closed overnight from 10pm and 5am between Monday, December 11 and Friday, December 15. The M4 westbound between junctions 11 and 12 will be closed overnight between 8pm and 6am from Monday, December 11 to Wednesday, December 13. The M4 eastbound between junctions 13 and 12 will be closed between 9pm on Thursday, December 14 and 6am on Friday, December 15. The M4 both eastbound and westbound between junctions 18 and 19 will be closed from 9pm on Thursday, December 14 and Friday, December 15. The M4 eastbound between junctions 23 and 22 will be closed overnight for maintenance from 9pm to 6am between Monday, December 11 and Tuesday, December 12 with a diversion via the M48 Severn Bridge. The M4 westbound between junctions 22 and 23 will be closed overnight for maintenance from 9pm to 6am between Wednesday, December 13 and Friday, December 15 with a diversion via the M48 Severn Bridge.