Description: A470 : Southbound : Nantgarw to Coryton : Congestion : Delays possible :, Start time: 05/12/2025 7:13 , Expected end time: 05/12/2025 10:13, Severity: Moderate, Source: Welsh Government, Last updated: 05/12/2025 7:13
Nearest town: 18.89 miles from Nant y derry.

Location: southbound between the M4 and the junction with the M5 .
Lane Closures : The hard shoulder and lane 1 are closed.
Due to: Roadworks.
Period : expect disruption until 06:00 on 5 December 2025.
Lanes Closed : There is one of two lanes closed.
Nearest town: 19.46 miles from Nant y derry.

Location: northbound between the junctions with the A466 and the A465 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 5 December 2025 to 06:00 on 6 December 2025.
Nearest town: 19.94 miles from Nant y derry.

Location: westbound between the A49 and the junction with the A466 .
Lane Closures : Lane two is closed.
Due to: Roadworks.
Period : expect disruption until 06:00 on 28 February 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 16.34 miles from Nant y derry.

Location: westbound.
Due to: Roadworks scheme.
Period : from 16:03 on 17 November 2025 to 06:00 on 28 February 2026.
Nearest town: 16.34 miles from Nant y derry.

Location: southbound between the junctions with the A4137 and the A40 .
Due to: Roadworks.
Period : expect disruption until 07:00 on 17 December 2025.
Nearest town: 19.02 miles from Nant y derry.

Location: northbound between the junctions with the A40 and the A4137 .
Due to: Roadworks.
Period : expect disruption until 07:00 on 17 December 2025.
Nearest town: 19.17 miles from Nant y derry.

Location: southbound between the M4 and the junction with the M5 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 11 December 2025 to 06:00 on 12 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.46 miles from Nant y derry.

Location: westbound entry slip at junction J22 (Avonmouth) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 18.26 miles from Nant y derry.

Location: westbound between junctions J21 (Chepstow) and J22 (Avonmouth) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.17 miles from Nant y derry.

Location: northbound between the junctions with the M5 and the M4 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.53 miles from Nant y derry.

Location: westbound exit slip at junction J22 (Avonmouth) .
Lane Closures : Lane one will be closed.
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 06:00 from 8 December 2025 to 10 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 18.42 miles from Nant y derry.

Location: westbound at junction J22 (Avonmouth) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 20:00 on 7 December 2025 to 01:00 on 8 December 2025.
Schedule : From 20:00 on 14 December 2025 to 01:00 on 15 December 2025.
Schedule : From 19:00 on 19 December 2025 to 00:00 on 20 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 18.23 miles from Nant y derry.

Location: eastbound at junction J22 (Avonmouth) .
Lane Closures : Lane one will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 20:00 on 7 December 2025 to 01:00 on 8 December 2025.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Schedule : From 20:00 on 14 December 2025 to 01:00 on 15 December 2025.
Schedule : From 20:00 on 17 December 2025 to 06:00 on 18 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.08 miles from Nant y derry.

Location: eastbound exit slip at junction J22 (Avonmouth) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 10 December 2025 to 06:00 on 11 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 18.08 miles from Nant y derry.

Location: eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 21:00 on 10 December 2025 to 06:00 on 11 December 2025.
Nearest town: 15.1 miles from Nant y derry.

Location: eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 10 December 2025 to 06:00 on 11 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 15.1 miles from Nant y derry.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 19:00 on 10 December 2025 to 06:00 on 11 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 15.77 miles from Nant y derry.

Location: southbound between the junctions with the A4137 and the A40 .
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 09:30 on 10 December 2025 to 14:00 on 11 December 2025.
Nearest town: 19.36 miles from Nant y derry.

Location: northbound between the junctions with the A40 and the A4137 .
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 09:30 on 10 December 2025 to 14:00 on 11 December 2025.
Nearest town: 19.41 miles from Nant y derry.

Location: westbound between the A49 and the junction with the A4137 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 19.6 miles from Nant y derry.

Location: southbound between the A466 and the junction with the A40 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 9 December 2025 to 06:00 on 10 December 2025.
Nearest town: 17.81 miles from Nant y derry.

Location: northbound between the A40 and the junction with the A466 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 9 December 2025 to 06:00 on 10 December 2025.
Nearest town: 19.61 miles from Nant y derry.

Location: westbound at junction J1 (Avonmouth) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 18.48 miles from Nant y derry.

Location: southbound between the junctions with the A4137 and the A40 .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 8 December 2025 to 06:00 on 9 December 2025.
Nearest town: 18.12 miles from Nant y derry.

Location: northbound between the junctions with the A40 and the A4137 .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 8 December 2025 to 06:00 on 9 December 2025.
Nearest town: 18.22 miles from Nant y derry.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 8 December 2025 to 06:00 on 9 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.77 miles from Nant y derry.

Location: westbound between the M4 and junction J1 (Avonmouth) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 8 December 2025 to 06:00 on 9 December 2025.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.89 miles from Nant y derry.

Location: westbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : All lanes will be closed.
Nearest town: 15.38 miles from Nant y derry.
