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A303 Severe Cleared

A303 | Somerset | Carriageway Closure | Expect Delays

17 Aug 2026, 21:56 Somerset 40 views

Incident Details

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

A303
Severe
Cleared
21:56, 17 Aug 2026
18:06, 19 Aug 2026

📜 Incident timeline

· First report

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 9h 45m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 20m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 10h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 11h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 12h 5m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 12h 40m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 13h 15m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 13h 50m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 14h 25m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 15h 0m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 15h 35m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 16h 10m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 16h 45m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 17h 20m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 17h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 18h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

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

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 19h 40m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 20h 15m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 20h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 21h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 22h 10m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 22h 45m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 20m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 23h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 24h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 5m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 25h 45m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 26h 20m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 0m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 27h 35m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 28h 10m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 28h 50m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 29h 25m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 0m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 30h 35m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 31h 10m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 31h 45m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 32h 25m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with vegetation.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 33h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 5m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 34h 40m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 35h 20m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 35h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 36h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 5m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 37h 40m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 38h 15m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 38h 55m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 39h 30m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) due to a lorry fire which is fully laden with hay bales.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 40h 40m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 41h 15m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 41h 50m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 42h 25m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 43h 0m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 43h 35m. Monitoring continues.

· Update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

· Update

⏱ Still active — no changes from National Highways. Incident ongoing for 44h 10m. Monitoring continues.

· Update

✅ Incident cleared — A303 reopened at 18:06 on 19 Aug 2026. Total disruption: 44h 10m. All lanes open, traffic returning to normal.

· Final update

The A303 is closed westbound between the A358 (Horton Cross) and the A30 (Upottery) to allow emergency resurfacing works to take place following a lorry fire.

Wording as published by National Highways, recorded as it changed.

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A303 — A303 | Somerset | Carriageway Closure | Expect Delays Full details 👉 https://uktrafficupdates.uk/traffic/incidents/26217202-a303-somerset-carriageway-closure-expect-delays/

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