Traffic Merthyr Tydfil

Cities
Merthyr Tydfil
ADD A ROAD
Nearby: Merthyr TydfilAberdareEbbw ValePorthPontypriddBlaenavon

SLIGHT

SEVERE

FULL SCREEN UPDATED: 14:00

Current traffic around Merthyr Tydfil

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

M4 J33 CAPEL LLANILLTERN TO A48 INTERCHANGE

Description: A4232SouthboundM4 J33 Capel Llanilltern to A48 InterchangeCongestionDelay: s possible :, Start time: 24/01/2026 11:52 , Expected end time: 24/01/2026 15:51, Severity: Moderate, Source: Welsh Government, Last updated: 24/01/2026 11:52
Nearest town: 18.47 miles from Merthyr Tydfil. CLEARED @ 12:06

J37 PYLE TO J42 EARLSWOOD

Description: M4Both directionsJ37 (Porthcawl) Pyle to J42 (Swansea) EarlswoodCyclic maintenance1 lane closed on M4Entry/Exit slip roads closedDiversions in place25/01/26-01/04/26 2000-0600 :, Start time: 25/01/2026 20:00 , End Date: 01/04/2026 6:00, Severity: Moderate, Source: Welsh Government, Last updated: 15/01/2026 9:51
Nearest town: 19.93 miles from Merthyr Tydfil. CLEARED @ 09:42

MILL BROOK

Description: A40WestboundMill BrookWestboundCarriageway maintenanceClosedDiversions in place27/01/26-29/01/26 2000-0600 :, Start time: 27/01/2026 20:00 , End Date: 29/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 20/01/2026 15:45
Nearest town: 14.34 miles from Merthyr Tydfil. CLEARED @ 09:42

J26 MALPAS

Description: M4WestboundJ26 (Newport) MalpasOffslip closed28/01/26-29/01/26 2000-0600 :, Start time: 28/01/2026 20:00 , End Date: 29/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/01/2026 8:01
Nearest town: 19.15 miles from Merthyr Tydfil. CLEARED @ 08:18

J40 TAIBACH

Description: M4EastboundJ40 (Port Talbot) TaibachOnslip closed25/01/26-30/01/26 2000-0600 :, Start time: 25/01/2026 20:00 , End Date: 30/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/01/2026 8:08
Nearest town: 19.9 miles from Merthyr Tydfil. CLEARED @ 08:18

There are no current incidents in this location.

Roadworks

Traffic in Nearby Villages

Pen y Darren (0.35mi)
Gurnos (0.45mi)
Galon Uchaf (0.9mi)
Twynyrodyn (1.03mi)
Heolgerrig (1.06mi)
Pant (1.22mi)
Cefn coed y cymmer (1.32mi)
Trefechan (1.32mi)
Ffos y fran (1.32mi)
Dowlais (1.5mi)
Gellideg (1.63mi)
Clwydyfagwyr (1.66mi)
Dowlais Top (1.72mi)
Vaynor (2.14mi)
Abercanaid (2.25mi)
Pentrebach (2.4mi)
Pontsticill (2.74mi)
Taff Fechan (3.04mi)
Troedyrhiw (3.22mi)
Fochriw (3.49mi)
Llwyn on Village (3.53mi)
Tre Gibbon (3.61mi)
Tre Ifor (3.61mi)
Robertstown (3.63mi)

Merthyr Tydfil

Let's Get Social

Get in touch with us or stay up to date with our latest news and updates.

Live Email Traffic Alerts

Get live email alerts whenever there is a traffic incident or roadworks on the on the roads you travel that may cause congestion or jams.

LEGAL NOTICE

Please remember that it is against the law to use your mobile phone, tablet or any electronic device without a hands-free kit whilst driving. If you're caught by the police using any device that can send or receive data whilst driving or riding a motorcyle you'll get an automatic fixed penalty notice, 6 points on your licence and a fine of £200. A court could also disqualify you from driving.

Elsewhere on the web:

National Highways England

Official source of traffic updates.

Transport for London (TFL)

Transport for London's (TfL) portal for transportation in London.

Traffic Wales

The Welsh government's traffic information service for Wales.

Traffic Scotland

Live traffic conditions and news for Scotland's road network.

YOUR AD HERE

Advertise to millions of motorists, holidaymakers and commuters.

Description: A4232 : Southbound : M4 J33 Capel Llanilltern to A48 Interchange : Congestion : Delays possible :, Start time: 24/01/2026 11:52 , Expected end time: 24/01/2026 15:51, Severity: Moderate, Source: Welsh Government, Last updated: 24/01/2026 11:52
Nearest town: 18.47 miles from Merthyr Tydfil.

51.49--3.29

Description: M4 : Both directions : J37 (Porthcawl) Pyle to J42 (Swansea) Earlswood : Cyclic maintenance : 1 lane closed on M4 : Entry/Exit slip roads closed : Diversions in place : 25/01/26-01/04/26 2000-0600 :, Start time: 25/01/2026 20:00 , End Date: 01/04/2026 6:00, Severity: Moderate, Source: Welsh Government, Last updated: 15/01/2026 9:51
Nearest town: 19.93 miles from Merthyr Tydfil.

51.58--3.76

Description: A40 : Westbound : Mill Brook : Westbound : Carriageway maintenance : Closed : Diversions in place : 27/01/26-29/01/26 2000-0600 :, Start time: 27/01/2026 20:00 , End Date: 29/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 20/01/2026 15:45
Nearest town: 14.34 miles from Merthyr Tydfil.

51.95--3.5

Description: M4 : Westbound : J26 (Newport) Malpas : Offslip closed : 28/01/26-29/01/26 2000-0600 :, Start time: 28/01/2026 20:00 , End Date: 29/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/01/2026 8:01
Nearest town: 19.15 miles from Merthyr Tydfil.

51.6--3.01

Description: M4 : Eastbound : J40 (Port Talbot) Taibach : Onslip closed : 25/01/26-30/01/26 2000-0600 :, Start time: 25/01/2026 20:00 , End Date: 30/01/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/01/2026 8:08
Nearest town: 19.9 miles from Merthyr Tydfil.

51.59--3.77

Except where otherwise noted, content and photographs on this site are licensed under a Creative Commons Attribution 3.0 License.
Owned, operated and copyright CliqTo Ltd 2026 and Chris Haycock. Registered company number 7575287.

Radio Jingle by Oleg Fedak from Pixabay D&B Business Listing