Description: M4 : Eastbound : M4 St Julians Viaduct : 27/04/26-30/11/26 0600 :, Start time: 27/04/2026 6:00 , End Date: 30/11/2026 6:00, Severity: Moderate, Source: Welsh Government, Last updated: 27/04/2026 6:00
Nearest town: 1.06 miles from Maindee.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 06:00 on 20 May 2026.
Nearest town: 12.15 miles from Maindee.

Location: northbound entry slip at junction J20 (Nailsea) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 19:00 on 18 May 2026 to 06:00 on 19 May 2026.
Nearest town: 12.29 miles from Maindee.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 19:00 on 18 May 2026 to 06:00 on 19 May 2026.
Nearest town: 12.23 miles from Maindee.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 18 May 2026 to 20 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 12.23 miles from Maindee.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 18 May 2026 to 20 May 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 12.15 miles from Maindee.

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 : Expect disruption everyday between 20:00 and 06:00 from 18 May 2026 to 20 May 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 20 May 2026 to 22 May 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 26 May 2026 to 28 May 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 14.45 miles from Maindee.

Location: northbound at junction J20 (Nailsea) .
Lane Closures : Lane one will be closed.
Due to: Emergency roadside drains works are planned.
Status : Pending.
Schedule : From 20:00 on 18 May 2026 to 04:00 on 19 May 2026.
Schedule : From 21:00 on 19 May 2026 to 04:00 on 20 May 2026.
Schedule : Expect disruption everyday between 20:00 and 04:00 from 20 May 2026 to 10 June 2026.
Schedule : From 21:00 on 10 June 2026 to 04:00 on 11 June 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 12.34 miles from Maindee.
