M4 closed J15–J16 westbound

Road closure on the M4 westbound at J15–J16 on Sunday 27 September 2026, from 20:01. Cleared at 04:47 after 8 h 46 min. Timeline of reports from National Highways.

Status

Cleared 04:47 on 28 Sept 2026, after 8 h 46 min

Location

M4 westbound · J15–J16

Reported as

Road closed · cause not reported yet

Lanes

Road closed

Sources

National Highways

Timeline

1. Sun 20:01 National Highways: road closed
2. Mon 04:47 National Highways: road reopened
3. Mon 04:47 All clear: no source reports it any more

Source reports

• M4 westbound between J15 and J16

Other recent incidents on the M4

• M4 crash Both directions08:08 · cleared after 1 h 5 min
• M4 stopped traffic J3 westbound06:48 · cleared after 3 h 3 min
• M4 crash J6 westboundyesterday 15:41 · cleared after 1 h 35 min
• M4 crash J10–J8 eastboundyesterday 07:50 · cleared after 2 h 6 min
• M4 stopped traffic J20–J21yesterday 07:29 · cleared after 1 h 23 min
• M4 stopped traffic J4–J3 eastboundyesterday 06:44 · cleared after 3 h 3 min
• M4 crash J18Tue 19:23 · cleared after 46 min
• M4 crash J5–J4B eastboundTue 18:15 · cleared after 57 min
• M4 closed J15–J16Tue 17:50 · cleared after 15 min
• M4 crash J19–J20 westboundTue 16:33 · cleared after 1 h 19 min

Live traffic and past incidents at M4 J15 and M4 J16.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.