Location: southbound exit slip at junction J21 (Weston super Mare) .
Due to: Broken down vehicle.
Time To Clear : The event is expected to clear between 15:00 and 15:15 on 24 January 2026.
Normal traffic conditions are expected between 15:00 and 15:15 on 24 January 2026.
Lanes Closed : There are lane closures.
Nearest town: 19.59 miles from Tongwynlais.

Location: southbound between junctions J20 (Nailsea) and J21 (Weston super Mare) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 29 January 2026 to 06:00 on 30 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 19.3 miles from Tongwynlais.

Location: southbound between junctions J20 (Nailsea) and J22 (Burnham on Sea) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 29 January 2026 to 06:00 on 3 February 2026.
Nearest town: 19.3 miles from Tongwynlais.

Location: southbound between junctions J20 (Nailsea) and J21 (Weston super Mare) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 28 January 2026 to 06:00 on 29 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 19.18 miles from Tongwynlais.

Location: northbound entry slip at junction J20 (Nailsea) .
Lane Closures : Lane one will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 27 January 2026 to 06:00 on 28 January 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.14 miles from Tongwynlais.

Location: northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 27 January 2026 to 06:00 on 28 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 19.12 miles from Tongwynlais.

Location: northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 26 January 2026 to 06:00 on 27 January 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 19.12 miles from Tongwynlais.

Location: northbound at junction J20 (Nailsea) .
Lane Closures : Lane one will be closed.
Due to: Emergency roadside drains works are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 04:00 from 24 January 2026 to 28 March 2026.
Schedule : From 20:00 on 28 March 2026 to 04:00 on 29 March 2026.
Schedule : Expect disruption everyday between 20:00 and 04:00 from 29 March 2026 to 1 April 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 19.17 miles from Tongwynlais.
