Overview
- A lorry reportedly went through the central reservation between J20 Clevedon and J21 Weston‑super‑Mare late on July 29, prompting an immediate emergency response and lane closures.
- Emergency services and recovery crews attended the scene and lanes partially reopened the following day, but lane 3 remains closed in both directions for safe barrier repairs.
- Motorists have faced multi‑mile tailbacks and long waits with delays initially around 40 minutes and later reported at 45 minutes or more as congestion spread.
- The closure has worsened queuing at nearby junctions including J20, J21, J24 and J25 and recovery work has required temporary full stops of southbound traffic to remove the vehicle.
- National Highways is coordinating repairs and advising drivers to expect continued disruption, use diversion routes where signposted, and contact the customer centre or emergency services if needed.