What happened
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
RoadA1
SeveritySevere
StatusCleared
DirectionBoth directions
Started21:46, 6 Sep 2026
Cleared04:01, 7 Sep 2026
Incident timeline
First report
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 2h 0m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 2h 35m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 3h 15m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 3h 50m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 4h 30m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 5h 5m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 5h 40m. Monitoring continues.
Update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Update
⏱ Still active — no changes from National Highways. Incident ongoing for 6h 15m. Monitoring continues.
Update
✅ Incident cleared — A1 reopened at 04:01 on 7 Sep 2026. Total disruption: 6h 15m. All lanes open, traffic returning to normal.
Final update
The A1(M) in Hertfordshire is closed in both directions between J7 and J8 near Stevenage, for Cadent Gas emergency repair work.
Wording from National Highways, recorded as it changed.
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