M4 Roadworks
This page brings together the latest M4 roadworks — lane closures, overnight closures, contraflows and speed restrictions along the M4 motorway, from London through Bristol and across the Severn into South Wales. Roadworks are one of the most common causes of M4 delays, so it’s worth a quick check here before you travel.
Latest M4 roadworks
Showing roadworks on the M4 — use the filters to narrow by junction or direction.
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Hardshoulder closure
Time now: Sunday, 2 August 2026, 06:0505:582 Aug 2026reported 6 min ago
- Location
- M4 eastbound between J17 and J16
- Direction
- Eastbound
- Lanes closed
- Hard shoulder closed
- Reason
- Roadworks
- Schedule
- 23:59 Tue 27 Apr 2021 → 18:00 Fri 30 Jul 2027
⏳Long-term works — HA planned end: 18:00 Fri 30 Jul 2027.
Updated 06:05, Sun 2 Aug 2026
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Planning around M4 roadworks
Major M4 works — including smart-motorway sections and Severn-area maintenance — often run overnight, when lanes or whole sections may be closed and diversions put in place. Where you can, check the affected junctions, allow extra time, or plan an alternative route. For live updates across the whole motorway see our Latest M4 Traffic News page, and use the M4 junction map to find your junction.