Welcome to our live coverage of motorway conditions.
Information has come in regarding an oversized load travelling along the M4 motorway today.
Traffic Wales has confirmed the procession will start at 10:30, with road users advised to expect difficulties around the M4 J32 Coryton Roundabout and the westbound exit slip road.
The authority also cautions that the section spanning J28 Tredegar Park to J32 Coryton, plus the A470 heading north from Coryton toward Abercynon, may experience hold-ups.
The journey is anticipated to last roughly 45 minutes, during which some impact on traffic flow is likely.
We have not been informed what the oversized load comprises but will continue monitoring traffic cameras.
Keep checking back for further information.
An oversized load refers to a vehicle meeting any of these criteria:
exceeding 44,000kg in weight
bearing an axle load surpassing 10,000kg for a single non-driving axle or 11,500kg for a single driving axle
wider than 2.9 metres
longer than 18.65 metres rigid length
Typical examples include:
Components for wind turbines, particularly blades or tower sections
Large transformers used in power infrastructure
Construction machinery such as cranes or oversized equipment
Prefabricated elements like bridge sections or modular buildings
Industrial parts transferred between ports and facilities
While the specific cargo remains unconfirmed, loads of this nature travelling this route typically connect to wind farm projects, with sizeable components such as turbine blades or tower sections being brought inland from coastal ports.
Historically, exceptionally large and weighty shipments have passed through Newport and South Wales.
In 2024, massive pieces of equipment including transformers, turbines, and generators were conveyed from Newport Docks to Hirwaun Power Station.
These ranked among the heaviest loads ever seen on Welsh roads and required specialist trailers alongside police convoys to ensure safe delivery.
The load has reached the Tredegar Park region, resulting in traffic build-up.
The oversized load has arrived and traffic is congested.
A closer view of the load near Tredegar Park.
Traffic is now building up rapidly near Tredegar Park.
The covered cargo in the image appears to be in the care of L. Allelys, a specialist firm that transports large and heavy equipment including transformers and wind turbine components throughout the United Kingdom, including Wales.
Areas of the A40 are also experiencing increased congestion as a result.
Traffic remains heavy.
The load on the M4 appears to be under transport by L. Allelys, a firm that hauls substantial equipment such as wind turbines and components for power stations.
They have previously completed major projects, including moving enormous turbines and generators from Newport Docks up to Hirwaun Power Station.
The route through Tredegar Park is the primary path from the docks into the Valleys for oversized loads.
One observer noted that a lorry accompanied by vehicles was proceeding along the M4 at 20mph with police escorts occupying two lanes.
The observer spotted it around J28 travelling in a westerly direction.
Delays are ongoing.
Journey times have increased by nine minutes and are growing on the M4 westbound between J28 A48 (Tredegar Park) and J30 A4232 Pentwyn Link Road (Cardiff Gate).
Typical speeds have dropped to ten mph.
A police escort is accompanying the turbine components heading west.
The turbine is progressing near the J30 to J32 Pontprennau area in the westbound direction.
Significant delays are now affecting the M4 westbound due to the turbine convoy, particularly in the J29 to J30 Michaelston-y-Fedw stretch westbound.
Significant delays of twelve minutes have been recorded and are worsening on the M4 westbound between J29 A48(M) and J32 A470 Northern Avenue (Coryton Interchange).
The Welsh Government has allocated millions toward wind turbine initiatives throughout Wales, including £8 million to Swansea-based Marine Power Systems, a company working on deep-water offshore turbine technology.
Supporters maintain that turbines produce clean energy by converting wind into electricity, generating employment and strengthening the green energy sector.
Significant delays continue affecting the M4 westbound due to the turbine convoy, with the turbine visible near the J32 eastbound entry slip.
Police are managing traffic near J32 northbound entry slip from the A470.
Significant delays persist on the M4 due to the turbine convoy in the J30 to J32 Lisvane westbound stretch.
Significant delays of sixteen minutes have been recorded and are increasing on the M4 westbound between J29 A48(M) and J32 A470 Northern Avenue (Coryton Interchange).
Accounts from those who witnessed the convoy keep coming in.
An observer remarked that they had just spotted it and were fortunate to be on the opposite carriageway, describing the situation as dreadful with extremely slow movement and advising people to avoid the area if possible.
Some readers have suggested that large transports like this should occur overnight when roads are quieter.
They expressed that such moves really ought to be scheduled during nighttime hours when there would be reduced impact on other road users and fewer traffic jams would mean less pollution, as Labour and others have advocated.
The convoy remains in progress and is now making its way toward the A470.
Congestion is present in the following areas.
Journey times have increased by seven minutes and are growing on the A470 northbound between M4 J32 (Coryton Interchange) and A468 Caerphilly Road (Nantgarw Interchange).
Typical speeds have dropped to 15 mph.
Traffic appears to be easing on the M4 in the Gwent area. Thank you for following our live coverage of this incident.