Description: M4 : Now clear : Both directions : Prince of Wales Bridge to J30 (Cardiff) Cardiff Gate, Start time: 09/03/2026 21:37 , Expected end time: 09/03/2026 21:42, Severity: Slight, Source: Welsh Government, Last updated: 09/03/2026 21:37
Nearest town: 15.94 miles from Treadam.

Location: westbound between junctions J1 (Avonmouth) and J2 (Chepstow) .
Due to: Roadworks.
Period : from 19:57 on 9 March 2026 to 06:00 on 10 March 2026.
Lanes Closed : All lanes are closed.
Nearest town: 19.66 miles from Treadam.

Location: northbound between the junctions with the A466 and the A465 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 10 March 2026 to 06:00 on 11 March 2026.
Nearest town: 13.77 miles from Treadam.

Location: southbound between the junctions with the A465 and the A466 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 10 March 2026 to 06:00 on 11 March 2026.
Nearest town: 13.87 miles from Treadam.

Location: northbound between the junctions with the A4103 and the A417 .
Due to: Emergency roadworks.
Period : expect disruption until 23:59 on 17 March 2026.
Nearest town: 18.73 miles from Treadam.

Location: northbound between the junctions with the A4137 and the A466 .
Due to: Roadside Drains Works.
Period : expect disruption until 06:00 on 10 March 2026.
Nearest town: 12.35 miles from Treadam.

Location: southbound between the junctions with the A466 and the A4137 .
Due to: Roadside Drains Works.
Period : expect disruption until 06:00 on 10 March 2026.
Nearest town: 11.82 miles from Treadam.

Location: northbound between the junctions with the A4137 and the A466 .
Due to: Roadside Drains Works.
Period : expect disruption until 06:00 on 10 March 2026.
Nearest town: 11.82 miles from Treadam.

Location: southbound between the junctions with the A466 and the A4137 .
Due to: Roadside Drains Works.
Period : expect disruption until 06:00 on 10 March 2026.
Nearest town: 12.5 miles from Treadam.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Lane Closures : Lane two is closed.
Due to: Roadworks.
Period : expect disruption until 06:00 on 10 March 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 17.61 miles from Treadam.

Location: southbound between the junctions with the A417 and the A4103 .
Due to: Emergency roadworks.
Period : expect disruption until 23:50 on 10 March 2026.
Nearest town: 18.7 miles from Treadam.

Location: northbound between the junctions with the A4103 and the A417 .
Due to: Emergency roadworks.
Period : expect disruption until 23:50 on 10 March 2026.
Nearest town: 18.69 miles from Treadam.

Location: westbound between the A49 and the junction with the A466 .
Due to: Roadworks scheme.
Period : from 16:03 on 17 November 2025 to 06:00 on 18 May 2026.
Nearest town: 11.46 miles from Treadam.

Location: southbound between the junctions with the A417 and the A4103 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.73 miles from Treadam.

Location: northbound between the junctions with the A4103 and the A417 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.57 miles from Treadam.

Location: westbound between junctions J2 (Hereford) and J3 (Newent) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.94 miles from Treadam.

Location: northbound between the junctions with the A4137 and the A466 .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 06:00 on 17 March 2026.
Nearest town: 11.99 miles from Treadam.

Location: southbound between the junctions with the A466 and the A4137 .
Due to: Roadside drains works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 06:00 on 17 March 2026.
Nearest town: 12.01 miles from Treadam.

Location: eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 06:00 on 18 March 2026.
Nearest town: 18.4 miles from Treadam.

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 : Expect disruption everyday between 21:00 and 06:00 from 16 March 2026 to 18 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.4 miles from Treadam.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 16 March 2026 to 18 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.61 miles from Treadam.

Location: westbound between the A49 and the junction with the A466 .
Lane Closures : Lane two will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 15 March 2026 to 06:00 on 16 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12 miles from Treadam.

Location: eastbound between the A466 and the junction with the A49 .
Lane Closures : Lane two will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 15 March 2026 to 06:00 on 16 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 10.77 miles from Treadam.

Location: northbound between the A438 and the junction with the A4103 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.53 miles from Treadam.

Location: southbound between the A4103 and the junction with the A438 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.98 miles from Treadam.

Location: eastbound between junctions J4 (S.
Wales) and J2 (Hereford) .
Lane Closures : Lane two will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 13 March 2026 to 06:00 on 14 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.58 miles from Treadam.

Location: westbound between junctions J2 (Hereford) and J4 (S.
Wales) .
Lane Closures : Lane two will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 13 March 2026 to 06:00 on 14 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.81 miles from Treadam.

Location: southbound between the junctions with the A465 and the A466 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 13 March 2026 to 06:00 on 14 March 2026.
Nearest town: 14.28 miles from Treadam.

Location: northbound between the junctions with the A466 and the A465 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 13 March 2026 to 06:00 on 14 March 2026.
Nearest town: 14.24 miles from Treadam.

Location: westbound at junction J1 (Avonmouth) .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 13 March 2026 to 15 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.94 miles from Treadam.

Location: eastbound exit slip at junction J1 (Avonmouth) .
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 13 March 2026 to 15 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.72 miles from Treadam.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 13 March 2026 to 15 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.61 miles from Treadam.

Location: eastbound between junctions J4 (S.
Wales) and J3 (Newent) .
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 16 March 2026 to 21 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.04 miles from Treadam.

Location: southbound between the junctions with the M50 and the A40 .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.99 miles from Treadam.

Location: westbound between junctions J3 (Newent) and J4 (S.
Wales) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.96 miles from Treadam.

Location: northbound between the junctions with the A466 and the A465 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Nearest town: 13.97 miles from Treadam.

Location: westbound between the junctions with the A449 and the A49 .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.5 miles from Treadam.

Location: southbound between the junctions with the A465 and the A466 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 12 March 2026 to 06:00 on 13 March 2026.
Nearest town: 14.03 miles from Treadam.

Location: southbound between the junctions with the A417 and the A4103 .
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 07:00 on 12 March 2026 to 19:00 on 16 March 2026.
Nearest town: 18.7 miles from Treadam.

Location: northbound between the junctions with the A4103 and the A417 .
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 07:00 on 12 March 2026 to 19:00 on 16 March 2026.
Nearest town: 18.69 miles from Treadam.

Location: westbound between junctions J3 (Newent) and J4 (S.
Wales) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 21:00 on 11 March 2026 to 06:00 on 12 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.33 miles from Treadam.

Location: northbound between the junctions with the A466 and the A465 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 11 March 2026 to 06:00 on 12 March 2026.
Nearest town: 14.04 miles from Treadam.

Location: southbound between the junctions with the A465 and the A466 .
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 11 March 2026 to 06:00 on 12 March 2026.
Nearest town: 14.07 miles from Treadam.

Location: eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 21:00 on 11 March 2026 to 06:00 on 12 March 2026.
Nearest town: 18.4 miles from Treadam.

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 11 March 2026 to 06:00 on 12 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.4 miles from Treadam.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 11 March 2026 to 06:00 on 12 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.61 miles from Treadam.

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 March 2026.
Lanes Closed : There is one of two lanes closed.
Nearest town: 11.46 miles from Treadam.

Location: eastbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 28 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 9.06 miles from Treadam.

Location: eastbound.
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 28 March 2026.
Nearest town: 9.06 miles from Treadam.

Location: eastbound between the A466 and the junction with the A49 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 28 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.04 miles from Treadam.

Location: eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 10:00 and 15:00 from 10 March 2026 to 11 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 17.61 miles from Treadam.

Location: eastbound between junctions J4 (S.
Wales) and J1 (Malvern) .
Due to: Roadworks scheme is planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 15 April 2026.
Nearest town: 16.04 miles from Treadam.
