The M4 is due to be closed in both directions this weekend between junctions 5 (Langley) and 6 (Slough), from 8pm today until 6am on Monday 28 June.
The M4 is also due to be closed in both directions next weekend between junctions 3 (Hayes) and 4b (M25 interchange), from 8pm on Friday 2 July to 6am the following Monday.
Visit the Highways England website for more details on the M4 smart motorway scheme.
https://highwaysengland.co.uk/our-work/south-east/m4-junctions-3-12-smart-motorway/