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The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
⏱ Still active — no changes from National Highways. Incident ongoing for 45 minutes. Monitoring continues.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
⏱ Still active — no changes from National Highways. Incident ongoing for 1h 20m. Monitoring continues.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
⏱ Still active — no changes from National Highways. Incident ongoing for 1h 55m. Delays of 60 minutes still recorded. Monitoring continues.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
⏱ Still active — no changes from National Highways. Incident ongoing for 2h 30m. Delays of 60 minutes still recorded. Monitoring continues.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
✅ Incident cleared — M4 reopened at 23:30 on 18 Jul 2026. Total disruption: 2h 40m. All lanes open, traffic returning to normal.
The M4 westbound in Wiltshire is closed between J16 (near Swindon) and J17 (near Chippenham) following a serious collision that occurred approx. 20:05 this evening. Traffic on the eastbound carriageway is also being held at this time.
Wording as published by National Highways, recorded as it changed.
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