A1(M) | South Yorkshire | Carriageway Closure | Expect Delays

Incident timeline

1. 22:41, 7 AugFirst report

   The A1(M) in South Yorkshire is closed northbound between J37 (Marr) and J39 (Barnsdale Bar), due to a collision involving two cars which occurred shortly before 22:00 this evening.

2. 23:15, 7 AugUpdate

   The A1(M) in South Yorkshire is closed northbound between J37 (Marr) and J39 (Barnsdale Bar), due to a collision involving two cars which occurred shortly before 22:00 this evening.

3. 23:45, 7 AugUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 4m. Monitoring continues.

4. 23:50, 7 AugUpdate

   The A1(M) in South Yorkshire is closed northbound between J37 (Marr) and J39 (Barnsdale Bar), due to a collision involving two cars which occurred shortly before 22:00 this evening.

5. 00:25, 8 AugUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 44m. Monitoring continues.

6. 00:30, 8 AugUpdate

   The A1(M) in South Yorkshire is closed northbound between J37 (Marr) and J39 (Barnsdale Bar), due to a collision involving two cars which occurred shortly before 22:00 this evening.

7. 00:55, 8 AugUpdate

   ✅ Incident cleared — A1 reopened at 00:55 on 8 Aug 2026. Total disruption: 2h 14m. All lanes open, traffic returning to normal.

8. 14:54, 6 NovFinal update

   The A1(M) in South Yorkshire is closed northbound between J37 (Marr) and J39 (Barnsdale Bar), due to a collision involving two cars which occurred shortly before 22:00 this evening.

Wording from National Highways, recorded as it changed.

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