M4 closed J16–J17 westbound

Cleared Cleared at 02:41 on 1 Oct 2026, after 43 min.

Road closure on the M4 westbound at J16–J17 on Thursday 1 October 2026, from 01:57. Cleared at 02:41 after 43 min. Timeline of reports from National Highways.

1. ✕

   M4 westbound · J16–J17

   Road closed · cause not reported yet

   01:57–02:41 (cleared after 43 min)

   National Highways

See the M4 on the live map M4 traffic now

Timeline

1. 01:57 National Highways: road closed
2. 02:41 National Highways: road reopened
3. 02:41 All clear: no source reports it any more

What the sources said

• M4 westbound between J16 and J17

Other recent incidents on the M4

• M4 closed J19–J20 westbound · yesterday 21:49, still reported
• M4 closed J16–J17 westbound · yesterday 21:42, cleared after 2 h 5 min
• M4 crash J11–J10 eastbound · yesterday 21:33, cleared after 54 min
• M4 closed J13–J14 westbound · yesterday 19:55, still reported
• M4 closed J12–J13 westbound · yesterday 19:55, still reported
• M4 closed J15–J16 westbound · yesterday 19:54, still reported
• M4 closed J16–J17 westbound · yesterday 19:54, cleared after 1 h
• M4 closed J20–J21 westbound · yesterday 19:43, still reported
• M4 crash J35 eastbound · yesterday 08:38, cleared after 3 h 6 min
• M4 crash J4 eastbound · yesterday 07:14, cleared after 1 h 2 min

About this page

This page shows what the data sources reported about this event and when, merged from every source that reported it at the same place. It doesn't say what caused it or whether anyone was hurt: no source reports that. Times are UK time. For live alerts, follow @motorways.me on Bluesky.