Traffic Cefn

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Current traffic around Cefn

The following traffic incidents and congestion for Cefn have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:

SOUTHBOUND
Description: A470Now clearSouthboundNantgarw to Coryton, Start time: 08/12/2025 9:05 , Expected end time: 08/12/2025 9:10, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:05
Nearest town: 9.38 miles from Cefn. CLEARED @ 10:30
NORTHBOUND
Description: A4232Now clearNorthboundA48 Interchange to M4 J33 Capel Llanilltern, Start time: 08/12/2025 9:05 , Expected end time: 08/12/2025 9:10, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:05
Nearest town: 12.06 miles from Cefn. CLEARED @ 10:30
NORTHBOUND
Description: A470Now clearNorthboundNantgarw, Start time: 08/12/2025 9:07 , Expected end time: 08/12/2025 9:12, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:07
Nearest town: 9.38 miles from Cefn. CLEARED @ 10:30
NANTGARW
Description: A470NorthboundNantgarwonslipRoadworksClosedDiversions in place07/12/25-09/12/25 2000-0600 :, Start time: 07/12/2025 20:00 , End Date: 09/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/12/2025 20:00
Nearest town: 9.38 miles from Cefn.
NANTGARW
Description: A470NorthboundNantgarwoffslipRoadworksClosedDiversions in place07/12/25-09/12/25 2000-0600 :, Start time: 07/12/2025 20:00 , End Date: 09/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/12/2025 20:00
Nearest town: 9.38 miles from Cefn.
PENTREBACH TO ABERCANAID
Description: A4060Both directionsPentrebach to AbercanaidRoadworksClosedDiversions in place27/11/25-19/12/25 2000-0600 :, Start time: 27/11/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 15:08
Nearest town: 16.03 miles from Cefn. CLEARED @ 15:30
A4051 INTERCHANGE (CROES-Y-MWYALCH) TO TURNPIKE R/BOUT
Description: A4042NorthboundA4051 Interchange (Croes-y-Mwyalch) to Turnpike R/bout11/12/25-12/12/25 2000-0600ClosedRoadworks :, Start time: 11/12/2025 20:00 , End Date: 12/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 14:40
Nearest town: 3.31 miles from Cefn. CLEARED @ 15:18
CWMBRAN TO A4051 INTERCHANGE (CROES-Y-MWYALCH)
Description: A4042SouthboundCwmbran to A4051 Interchange (Croes-y-Mwyalch)08/12/25-12/12/25 2000-0600ClosedDiversions in place :, Start time: 08/12/2025 20:00 , End Date: 12/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 14:58
Nearest town: 3.31 miles from Cefn. CLEARED @ 15:18


There are no current incidents in this location.

Roadworks

ROAD WORKS
Location: The M5 southbound entry slip at junction J18 (Bristol) .
Lane closures: Lane one will be closed.
Reason: Roadside drains works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 22:00 and 06:00 from 8 Dec 2025 to 10 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 17.47 miles from Cefn.
ROAD WORKS
Location: The M5 northbound entry slip at junction J21 (Weston super Mare) .
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 17.12 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: There will be one of three lanes closed.
Nearest town: 17.24 miles from Cefn.
ROAD WORKS
Location: The M49 southbound between the junctions with the M4 and the M5 .
Lane closures: Lane two will be closed.
Reason: Roadside drains works are planned.
Status: Pending.
Schedule: From 20:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 17.54 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 21:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: There will be one of three lanes closed.
Nearest town: 14.47 miles from Cefn.
ROAD WORKS
Location: The M48 eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 16.79 miles from Cefn.
ROAD WORKS
Location: The M48 westbound between the M4 and junction J1 (Avonmouth) .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 8 Dec 2025 to 06:00 on 9 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 19.24 miles from Cefn.
ROAD WORKS
Location: The M5 southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane closures: The hard shoulder is closed.
Reason: Roadworks.
Status: Currently Active.
Period: expect disruption until 16:00 on 8 Dec 2025.
Nearest town: 14.84 miles from Cefn. CLEARED @ 14:06
ROAD WORKS
Location: The M48 eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 22:00 on 12 Dec 2025 to 06:00 on 15 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 16.79 miles from Cefn.
ROAD WORKS
Location: The M48 westbound between the M4 and junction J1 (Avonmouth) .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 22:00 on 12 Dec 2025 to 06:00 on 15 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 19.24 miles from Cefn.
ROAD WORKS
Location: The M5 southbound between junctions J19 (Portishead) and J20 (Nailsea) .
Lane closures: Lane one will be closed.
Reason: Barrier repairs are planned.
Status: Pending.
Schedule: From 21:00 on 12 Dec 2025 to 06:00 on 13 Dec 2025.
Lanes Closed: There will be one of three lanes closed.
Nearest town: 15.6 miles from Cefn.
ROAD WORKS
Location: The M5 northbound entry slip at junction J20 (Nailsea) .
Lane closures: Lane one will be closed.
Reason: Barrier repairs are planned.
Status: Pending.
Schedule: From 20:00 on 12 Dec 2025 to 06:00 on 13 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 14.08 miles from Cefn.
ROAD WORKS
Location: The M49 southbound between the M4 and the junction with the M5 .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 11 Dec 2025 to 06:00 on 12 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 17.75 miles from Cefn.
ROAD WORKS
Location: The M49 northbound between the M5 and the junction with the M4 .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 11 Dec 2025 to 06:00 on 12 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 17.91 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J22 (Burnham on Sea) and J21 (Weston super Mare) .
Reason: Horticultural works are planned.
Status: Pending.
Schedule: From 08:00 on 11 Dec 2025 to 16:00 on 11 Dec 2025.
Nearest town: 18.98 miles from Cefn.
ROAD WORKS
Location: The M4 westbound entry slip at junction J22 (Avonmouth) .
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 21:00 on 9 Dec 2025 to 06:00 on 10 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 17.03 miles from Cefn.
ROAD WORKS
Location: The M4 westbound between junctions J21 (Chepstow) and J22 (Avonmouth) .
Lane closures: Lane two will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 9 Dec 2025 to 06:00 on 10 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 18.39 miles from Cefn.
ROAD WORKS
Location: The M49 northbound between the junctions with the M5 and the M4 .
Lane closures: Lane one will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 9 Dec 2025 to 06:00 on 10 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 17.12 miles from Cefn.
ROAD WORKS
Location: The M4 westbound exit slip at junction J22 (Avonmouth) .
Lane closures: Lane one will be closed.
Reason: Roadside drains works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 22:00 and 06:00 from 8 Dec 2025 to 10 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 17.26 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J20 (Nailsea) and J19 (Portishead) .
Reason: Horticultural works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 08:00 and 16:00 from 9 Dec 2025 to 10 Dec 2025.
Nearest town: 15.02 miles from Cefn.
ROAD WORKS
Location: The M4 westbound at junction J22 (Avonmouth) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Road repairs are planned.
Status: Pending.
Schedule: From 20:00 on 14 Dec 2025 to 01:00 on 15 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 17.01 miles from Cefn.
ROAD WORKS
Location: The M4 eastbound at junction J22 (Avonmouth) .
Lane closures: Lane one will be closed.
Reason: Road repairs are planned.
Status: Pending.
Schedule: From 20:00 on 9 Dec 2025 to 06:00 on 10 Dec 2025.
Schedule: From 20:00 on 14 Dec 2025 to 01:00 on 15 Dec 2025.
Schedule: From 20:00 on 17 Dec 2025 to 06:00 on 18 Dec 2025.
Lanes Closed: There will be one of two lanes closed.
Nearest town: 16.81 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J18A (South Wales) and J17 (Bristol West) .
Lane closures: Lanes 2 and 3 will be closed.
Reason: Roadside drains works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 22:00 and 06:00 from 10 Dec 2025 to 12 Dec 2025.
Lanes Closed: There will be two of three lanes closed.
Nearest town: 19 miles from Cefn.
ROAD WORKS
Location: The M4 eastbound exit slip at junction J22 (Avonmouth) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 21:00 on 10 Dec 2025 to 06:00 on 11 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 16.81 miles from Cefn.
ROAD WORKS
Location: The M4 eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Reason: Roadworks scheme is planned.
Status: Pending.
Schedule: From 21:00 on 10 Dec 2025 to 06:00 on 11 Dec 2025.
Nearest town: 13.39 miles from Cefn.
ROAD WORKS
Location: The M4 eastbound between junctions J23 (Chepstow) and J22 (Avonmouth) .
Lane closures: Lanes 1, 2 and 3 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 21:00 on 10 Dec 2025 to 06:00 on 11 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 13.39 miles from Cefn.
ROAD WORKS
Location: The M48 eastbound between junctions J2 (Chepstow) and J1 (Avonmouth) .
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 19:00 on 10 Dec 2025 to 06:00 on 11 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 16.79 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J19 (Portishead) and J18 (Bristol) .
Lane closures: Lanes 1, 2 and 3 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 8 Dec 2025 to 12 Dec 2025.
Schedule: From 19:00 on 12 Dec 2025 to 09:00 on 13 Dec 2025.
Schedule: From 19:00 on 13 Dec 2025 to 10:00 on 14 Dec 2025.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 15 Dec 2025 to 19 Dec 2025.
Lanes Closed: There will be three of four lanes closed.
Nearest town: 16.75 miles from Cefn.
ROAD WORKS
Location: The M5 northbound at junction J19 (Portishead) .
Lane closures: Lanes 1, 2 and 3 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 8 Dec 2025 to 12 Dec 2025.
Schedule: From 19:00 on 12 Dec 2025 to 09:00 on 13 Dec 2025.
Schedule: From 19:00 on 13 Dec 2025 to 10:00 on 14 Dec 2025.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 15 Dec 2025 to 19 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 16.49 miles from Cefn.
ROAD WORKS
Location: The M48 westbound at junction J1 (Avonmouth) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: From 20:00 on 9 Dec 2025 to 06:00 on 10 Dec 2025.
Lanes Closed: All lanes will be closed.
Nearest town: 18.96 miles from Cefn.
ROAD WORKS
Location: The M5 southbound between junctions J18 (Bristol) and J19 (Portishead) .
Lane closures: Lane four will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 8 Dec 2025 to 15 Dec 2025.
Lanes Closed: There will be one of four lanes closed.
Nearest town: 17.28 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J18A (South Wales) and J17 (Bristol West) .
Lane closures: The hard shoulder is closed.
Reason: Horticultural works.
Status: Currently Active.
Period: expect disruption until 16:00 on 8 Dec 2025.
Nearest town: 18.37 miles from Cefn.
ROAD WORKS
Location: The M5 southbound between junctions J20 (Nailsea) and J22 (Burnham on Sea) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: Expect disruption everyday between 20:00 and 06:00 from 8 Dec 2025 to 10 Dec 2025.
Schedule: Expect disruption everyday between 21:00 and 06:00 from 10 Dec 2025 to 13 Dec 2025.
Lanes Closed: There will be two of three lanes closed.
Nearest town: 15.81 miles from Cefn.
ROAD WORKS
Location: The M5 southbound between junctions J17 (Bristol West) and J18 (Bristol) .
Reason: Horticultural works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 08:00 and 16:00 from 9 Dec 2025 to 23 Dec 2025.
Nearest town: 18.83 miles from Cefn.
ROAD WORKS
Location: The M5 northbound between junctions J22 (Burnham on Sea) and J20 (Nailsea) .
Lane closures: Lanes 1 and 2 will be closed.
Reason: Roadworks are planned.
Status: Pending.
Schedule: Expect disruption everyday between 20:00 and 06:00 from 15 Dec 2025 to 19 Dec 2025.
Lanes Closed: There will be two of three lanes closed.
Nearest town: 18.63 miles from Cefn.
ROAD WORKS
Location: The M5 northbound at junction J20 (Nailsea) .
Lane closures: Lane one will be closed.
Reason: Emergency roadside drains works are planned.
Status: Pending.
Schedule: Expect disruption everyday between 20:00 and 04:00 from 8 Dec 2025 to 28 Mar 2026.
Schedule: From 20:00 on 28 Mar 2026 to 04:00 on 29 Mar 2026.
Schedule: Expect disruption everyday between 20:00 and 04:00 from 29 Mar 2026 to 1 Apr 2026.
Lanes Closed: There will be one of three lanes closed.
Nearest town: 14.12 miles from Cefn.

Traffic in Nearby Villages

Cefn

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Description: A470 : Now clear : Southbound : Nantgarw to Coryton, Start time: 08/12/2025 9:05 , Expected end time: 08/12/2025 9:10, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:05
Nearest town: 9.38 miles from Cefn.

51.54--3.26

Description: A4232 : Now clear : Northbound : A48 Interchange to M4 J33 Capel Llanilltern, Start time: 08/12/2025 9:05 , Expected end time: 08/12/2025 9:10, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:05
Nearest town: 12.06 miles from Cefn.

51.49--3.29

Description: A470 : Now clear : Northbound : Nantgarw, Start time: 08/12/2025 9:07 , Expected end time: 08/12/2025 9:12, Severity: Moderate, Source: Welsh Government, Last updated: 08/12/2025 9:07
Nearest town: 9.38 miles from Cefn.

51.56--3.27

Description: A470 : Northbound : Nantgarw : onslip : Roadworks : Closed : Diversions in place : 07/12/25-09/12/25 2000-0600 :, Start time: 07/12/2025 20:00 , End Date: 09/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/12/2025 20:00
Nearest town: 9.38 miles from Cefn.

51.56--3.27

Description: A470 : Northbound : Nantgarw : offslip : Roadworks : Closed : Diversions in place : 07/12/25-09/12/25 2000-0600 :, Start time: 07/12/2025 20:00 , End Date: 09/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/12/2025 20:00
Nearest town: 9.38 miles from Cefn.

51.56--3.27

Description: A4060 : Both directions : Pentrebach to Abercanaid : Roadworks : Closed : Diversions in place : 27/11/25-19/12/25 2000-0600 :, Start time: 27/11/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 15:08
Nearest town: 16.03 miles from Cefn.

51.72--3.36

Description: A4042 : Northbound : A4051 Interchange (Croes-y-Mwyalch) to Turnpike R/bout : 11/12/25-12/12/25 2000-0600 : Closed : Roadworks :, Start time: 11/12/2025 20:00 , End Date: 12/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 14:40
Nearest town: 3.31 miles from Cefn.

51.62--3

Description: A4042 : Southbound : Cwmbran to A4051 Interchange (Croes-y-Mwyalch) : 08/12/25-12/12/25 2000-0600 : Closed : Diversions in place :, Start time: 08/12/2025 20:00 , End Date: 12/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 06/12/2025 14:58
Nearest town: 3.31 miles from Cefn.

51.62--3

Location: southbound entry slip at junction J18 (Bristol) .

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: 17.47 miles from Cefn.

51.5--2.67

Location: northbound entry slip at junction J21 (Weston super Mare) .

Due to: Roadworks are planned.

Status : Pending.

Schedule : From 20:00 on 8 December 2025 to 06:00 on 9 December 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 17.12 miles from Cefn.

51.36--2.89

Location: northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .

Lane Closures : Lane one 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 three lanes closed.
Nearest town: 17.24 miles from Cefn.

51.36--2.89

Location: southbound between the junctions with the M4 and the M5 .

Lane Closures : Lane two will be closed.

Due to: Roadside drains works 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: 17.54 miles from Cefn.

51.51--2.67

Location: northbound between junctions J21 (Weston super Mare) and J20 (Nailsea) .

Lane Closures : Lane one will be closed.

Due to: Roadworks are planned.

Status : Pending.

Schedule : From 21:00 on 8 December 2025 to 06:00 on 9 December 2025.

Lanes Closed : There will be one of three lanes closed.
Nearest town: 14.47 miles from Cefn.

51.42--2.85

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: 16.79 miles from Cefn.

51.62--2.67

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: 19.24 miles from Cefn.

51.6--2.61

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .

Lane Closures : The hard shoulder is closed.

Due to: Roadworks.



Period : expect disruption until 16:00 on 8 December 2025.
Nearest town: 14.84 miles from Cefn.

51.45--2.78

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 22:00 on 12 December 2025 to 06:00 on 15 December 2025.

Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.79 miles from Cefn.

51.62--2.67

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 22:00 on 12 December 2025 to 06:00 on 15 December 2025.

Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.24 miles from Cefn.

51.6--2.61

Location: southbound between junctions J19 (Portishead) and J20 (Nailsea) .

Lane Closures : Lane one will be closed.

Due to: Barrier repairs are planned.

Status : Pending.

Schedule : From 21:00 on 12 December 2025 to 06:00 on 13 December 2025.

Lanes Closed : There will be one of three lanes closed.
Nearest town: 15.6 miles from Cefn.

51.46--2.75

Location: northbound entry slip at junction J20 (Nailsea) .

Lane Closures : Lane one will be closed.

Due to: Barrier repairs are planned.

Status : Pending.

Schedule : From 20:00 on 12 December 2025 to 06:00 on 13 December 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 14.08 miles from Cefn.

51.43--2.84

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: 17.75 miles from Cefn.

51.55--2.65

Location: northbound between the M5 and the junction with the M4 .

Lane Closures : Lane two 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: 17.91 miles from Cefn.

51.53--2.65

Location: northbound between junctions J22 (Burnham on Sea) and J21 (Weston super Mare) .

Due to: Horticultural works are planned.

Status : Pending.

Schedule : From 08:00 on 11 December 2025 to 16:00 on 11 December 2025.
Nearest town: 18.98 miles from Cefn.

51.33--2.89

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: 17.03 miles from Cefn.

51.57--2.66

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: 18.39 miles from Cefn.

51.57--2.63

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: 17.12 miles from Cefn.

51.56--2.66

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: 17.26 miles from Cefn.

51.57--2.65

Location: northbound between junctions J20 (Nailsea) and J19 (Portishead) .

Due to: Horticultural works are planned.

Status : Pending.

Schedule : Expect disruption everyday between 08:00 and 16:00 from 9 December 2025 to 10 December 2025.
Nearest town: 15.02 miles from Cefn.

51.45--2.78

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 14 December 2025 to 01:00 on 15 December 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 17.01 miles from Cefn.

51.57--2.66

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 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: 16.81 miles from Cefn.

51.57--2.66

Location: northbound between junctions J18A (South Wales) and J17 (Bristol West) .

Lane Closures : Lanes 2 and 3 will be closed.

Due to: Roadside drains works are planned.

Status : Pending.

Schedule : Expect disruption everyday between 22:00 and 06:00 from 10 December 2025 to 12 December 2025.

Lanes Closed : There will be two of three lanes closed.
Nearest town: 19 miles from Cefn.

51.52--2.62

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: 16.81 miles from Cefn.

51.57--2.66

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: 13.39 miles from Cefn.

51.58--2.74

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: 13.39 miles from Cefn.

51.58--2.74

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: 16.79 miles from Cefn.

51.62--2.67

Location: northbound between junctions J19 (Portishead) and J18 (Bristol) .

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 8 December 2025 to 12 December 2025.

Schedule : From 19:00 on 12 December 2025 to 09:00 on 13 December 2025.

Schedule : From 19:00 on 13 December 2025 to 10:00 on 14 December 2025.

Schedule : Expect disruption everyday between 21:00 and 06:00 from 15 December 2025 to 19 December 2025.

Lanes Closed : There will be three of four lanes closed.
Nearest town: 16.75 miles from Cefn.

51.48--2.71

Location: northbound at junction J19 (Portishead) .

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 8 December 2025 to 12 December 2025.

Schedule : From 19:00 on 12 December 2025 to 09:00 on 13 December 2025.

Schedule : From 19:00 on 13 December 2025 to 10:00 on 14 December 2025.

Schedule : Expect disruption everyday between 21:00 and 06:00 from 15 December 2025 to 19 December 2025.

Lanes Closed : All lanes will be closed.
Nearest town: 16.49 miles from Cefn.

51.48--2.71

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: 18.96 miles from Cefn.

51.6--2.61

Location: southbound between junctions J18 (Bristol) and J19 (Portishead) .

Lane Closures : Lane four will be closed.

Due to: Roadworks are planned.

Status : Pending.

Schedule : Expect disruption everyday between 21:00 and 06:00 from 8 December 2025 to 15 December 2025.

Lanes Closed : There will be one of four lanes closed.
Nearest town: 17.28 miles from Cefn.

51.5--2.68

Location: northbound between junctions J18A (South Wales) and J17 (Bristol West) .

Lane Closures : The hard shoulder is closed.

Due to: Horticultural works.



Period : expect disruption until 16:00 on 8 December 2025.
Nearest town: 18.37 miles from Cefn.

51.52--2.64

Location: southbound between junctions J20 (Nailsea) and J22 (Burnham on Sea) .

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 8 December 2025 to 10 December 2025.

Schedule : Expect disruption everyday between 21:00 and 06:00 from 10 December 2025 to 13 December 2025.

Lanes Closed : There will be two of three lanes closed.
Nearest town: 15.81 miles from Cefn.

51.39--2.86

Location: southbound between junctions J17 (Bristol West) and J18 (Bristol) .

Due to: Horticultural works are planned.

Status : Pending.

Schedule : Expect disruption everyday between 08:00 and 16:00 from 9 December 2025 to 23 December 2025.
Nearest town: 18.83 miles from Cefn.

51.52--2.63

Location: northbound between junctions J22 (Burnham on Sea) and J20 (Nailsea) .

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 15 December 2025 to 19 December 2025.

Lanes Closed : There will be two of three lanes closed.
Nearest town: 18.63 miles from Cefn.

51.34--2.89

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 8 December 2025 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: 14.12 miles from Cefn.

51.43--2.84