Both carriageways of the M4 will be closed between junctions 8/9 (Maidenhead) and 6 (Slough East) this weekend for resurfacing work from 8pm on Friday, November 20 to 6am on Monday, November 23.
Resurfacing sections of the carriageway and trenches across the carriageway are part of the smart motorway upgrade.
Traffic will be diverted along the A308M, A308, A332 and the A355.
Drivers are advised to plan their journeys, allow extra time or avoid this route if possible. More information (www.highwaysengland.co.uk/traffic), or 0300 123 5000.