Description: A470 : Now clear : Southbound : Nantgarw to Coryton, Start time: 09/03/2026 9:23 , Expected end time: 09/03/2026 9:28, Severity: Moderate, Source: Welsh Government, Last updated: 09/03/2026 9:23
Nearest town: 8.42 miles from Penarth.

Description: M4 : Now clear : Eastbound : J27 (High Cross) High Cross to J23A (Magor) Magor, Start time: 09/03/2026 9:13 , Expected end time: 09/03/2026 9:18, Severity: Moderate, Source: Welsh Government, Last updated: 09/03/2026 9:13
Nearest town: 15.18 miles from Penarth.

Description: M4 : Now clear : Eastbound : J33 (Cardiff) Capel Llanilltern, Start time: 09/03/2026 9:14 , Expected end time: 09/03/2026 9:19, Severity: Moderate, Source: Welsh Government, Last updated: 09/03/2026 9:14
Nearest town: 7.54 miles from Penarth.

Description: M4 : Westbound : J23 (Chepstow) Rogiet : Roadworks : Road closed : Diversions in place : 12/03/26-13/03/26 2000-0600 :, Start time: 12/03/2026 20:00 , End Date: 13/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:16
Nearest town: 19.15 miles from Penarth.

Description: M4 : Eastbound : J28 (Newport) Tredegar Park to J26 (Newport) Malpas : Resurfacing work : Road closed : Diversions in place : 09/03/26-14/03/26 2000-0600 :, Start time: 09/03/2026 20:00 , End Date: 14/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:17
Nearest town: 12.34 miles from Penarth.

Description: M4 : Westbound : J35 (Pen-coed) Pencoed to J37 (Porthcawl) Pyle : Roadworks : Road closed : Diversions in place : 11/03/26-12/03/26 2000-0600 :, Start time: 11/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:18
Nearest town: 19.09 miles from Penarth.

Description: M4 : Westbound : J35 (Pen-coed) Pencoed : Roadworks : Entry slip road closed : Diversions in place : 11/03/26-12/03/26 2000-0600 :, Start time: 11/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:19
Nearest town: 15.02 miles from Penarth.

Description: M4 : Eastbound : J36 (Bridgend) Sarn : Roadworks : Entry slip road closed : Diversions in place : 02/03/26-21/03/26 2000-0600 :, Start time: 02/03/2026 20:00 , End Date: 21/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:20
Nearest town: 18.52 miles from Penarth.

Description: M4 : Westbound : J36 (Bridgend) Sarn : Resurfacing work : Entry slip road closed : Diversions in place : 11/03/26-12/03/26 2000-0600 :, Start time: 11/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:21
Nearest town: 18.52 miles from Penarth.

Description: A470 : Northbound : Taffs Well : Resurfacing work : Entry slip road closed : Diversions in place : 08/03/26-14/03/26 2000-0600 :, Start time: 08/03/2026 20:00 , End Date: 14/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 08/03/2026 20:00
Nearest town: 8 miles from Penarth.

Description: A470 : Northbound : Taffs Well to Nantgarw : Resurfacing work : Road closed : Diversions in place : 10/03/26-11/03/26 2000-0600 :, Start time: 10/03/2026 20:00 , End Date: 11/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:04
Nearest town: 8.91 miles from Penarth.

Description: A470 : Southbound : Nantgarw to Taffs Well : Roadworks : Road closed : Diversions in place : 11/03/26-12/03/26 2000-0600 :, Start time: 11/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:05
Nearest town: 8.91 miles from Penarth.

Description: A470 : Northbound : Abercynon to Pentrebach : Resurfacing work : Road closed : Diversions in place : 12/03/26-14/03/26 2000-0600 :, Start time: 12/03/2026 20:00 , End Date: 14/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:06
Nearest town: 18.64 miles from Penarth.

Description: A48M : Eastbound : M4 J29A St Mellons to M4 J29 Castleton : Roadworks : Road closed : Diversions in place : 09/03/26-12/03/26 2000-0600 :, Start time: 09/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:09
Nearest town: 8.59 miles from Penarth.

Description: M4 : Eastbound : J23 (Chepstow) Rogiet : Roadworks : Road closed : Diversions in place : 11/03/26-12/03/26 2000-0600 :, Start time: 11/03/2026 20:00 , End Date: 12/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 12:14
Nearest town: 19.15 miles from Penarth.

Description: M4 : Eastbound : J26 (Newport) Malpas to J28 (Newport) Tredegar Park : Resurfacing work : Road closed : Diversions in place : 09/03/26-13/03/26 2000-0600 :, Start time: 09/03/2026 20:00 , End Date: 13/03/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/03/2026 10:37
Nearest town: 12.34 miles from Penarth.

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane Closures : The hard shoulder is closed.
Due to: Roadworks.
Period : expect disruption until 17:00 on 13 March 2026.
Nearest town: 17.29 miles from Penarth.

Location: northbound between junctions J23 (Highbridge) and J22 (Burnham on Sea) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 17.72 miles from Penarth.

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Nearest town: 19.96 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 11 March 2026 to 06:00 on 21 March 2026.
Nearest town: 15.75 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 11 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 March 2026 to 21 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 16.25 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 11 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 March 2026 to 21 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 15.75 miles from Penarth.

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane Closures : Lane four will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 10 March 2026 to 06:00 on 11 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 19.96 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 10 March 2026 to 06:00 on 11 March 2026.
Nearest town: 15.76 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 10 March 2026 to 06:00 on 11 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 16.25 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 10 March 2026 to 06:00 on 11 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 15.76 miles from Penarth.

Location: northbound between junctions J23 (Highbridge) and J22 (Burnham on Sea) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 9 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 17.27 miles from Penarth.

Location: northbound exit slip at junction J22 (Burnham on Sea) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 9 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.98 miles from Penarth.

Location: southbound exit slip at junction J22 (Burnham on Sea) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 9 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.8 miles from Penarth.

Location: southbound between junctions J21 (Weston super Mare) and J22 (Burnham on Sea) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 9 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 16.68 miles from Penarth.

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane Closures : The hard shoulder is closed.
Due to: Horticultural works.
Period : expect disruption until 17:00 on 9 March 2026.
Nearest town: 19.96 miles from Penarth.

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Lane Closures : The hard shoulder is closed.
Due to: Barrier repairs.
Period : expect disruption until 17:00 on 9 March 2026.
Nearest town: 17.22 miles from Penarth.

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 10 March 2026 to 14 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 28 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 30 March 2026 to 1 April 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 17.43 miles from Penarth.

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 9 March 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: 14.75 miles from Penarth.
