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What happened

The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

RoadA1
SeveritySevere
StatusCleared
DirectionNorthbound
Started08:02, 20 Aug 2026
Cleared17:46, 20 Aug 2026

Incident timeline

  1. First report

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  2. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  3. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 39 minutes. Monitoring continues.

  4. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  5. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 14m. Monitoring continues.

  6. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  7. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 49m. Monitoring continues.

  8. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  9. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 2h 24m. Monitoring continues.

  10. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  11. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 2h 59m. Monitoring continues.

  12. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  13. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 3h 34m. Monitoring continues.

  14. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  15. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 4h 9m. Monitoring continues.

  16. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  17. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 4h 44m. Monitoring continues.

  18. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  19. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 5h 19m. Monitoring continues.

  20. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  21. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 5h 54m. Monitoring continues.

  22. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  23. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 6h 29m. Monitoring continues.

  24. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  25. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 7h 4m. Monitoring continues.

  26. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  27. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 7h 44m. Monitoring continues.

  28. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  29. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 8h 19m. Monitoring continues.

  30. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  31. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 8h 59m. Monitoring continues.

  32. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  33. Update

    ⏱ Still active — no changes from National Highways. Incident ongoing for 9h 39m. Monitoring continues.

  34. Update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

  35. Update

    ✅ Incident cleared — A1 reopened at 17:46 on 20 Aug 2026. Total disruption: 9h 44m. All lanes open, traffic returning to normal.

  36. Final update

    The A1 in Lincolnshire is closed northbound between the B1174 (Little Ponton) and the A607 (Grantham) due to a traffic collision involving a HGV.

Wording from National Highways, recorded as it changed.

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A1 — A1 | Lincolnshire | Carriageway Closure | Delays Full details: https://uktrafficupdates.uk/traffic/incidents/26218706-a1-lincolnshire-carriageway-closure-delays/

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