**Multiple Road Closures and Lane Restrictions Bring Delays to Wales This Sunday**
Motorists across Wales are being urged to plan ahead this Sunday, 15th June, as a raft of road closures and traffic restrictions are likely to disrupt journeys throughout the country. A combination of scheduled maintenance and improvement works means that several major roads, as well as regional routes, will either be fully closed or have lanes restricted, creating the potential for longer travel times.
As of early Sunday morning, the widely travelled M4 motorway remained largely free from new disruptions, although ongoing works continue to affect the key M4 Prince of Wales Bridge and several arterial A-roads. According to the latest updates from local transport authorities and the traffic monitoring service Inrix, drivers are expected to face particular difficulties in areas across Monmouthshire, Swansea, Gwynedd, and beyond.
One significant closure to note is on the westbound side of the M4 Prince of Wales Bridge, connecting Wales and England, where one lane remains closed for resurfacing works. These disruptions are expected to persist until early July. During overnight periods, full closures may also come into effect, so regular commuters are advised to check in advance before starting their journeys.
On the M48 Severn Bridge, which runs parallel to the M4, there is a temporary, weight-restricted limit of 7.5 tonnes due to extended maintenance activities. This limitation affects freight transit in both directions between Junction 2 (A466 Wye Valley Link Road, Chepstow) and Junction 1 (A403, Aust), although buses and coaches remain unaffected. Notably, these restrictions will not be lifted until May 2026, highlighting the scale and duration of the works.
Further afield, key routes such as the A40 around Monmouth continue to operate under a contraflow system as part of ongoing roadworks. Both directions between the Dixton Road roundabout and Whitchurch are impacted, with completion not expected until late August. Local authorities warn that delays are likely during peak travel periods.
Residents and those travelling through north-west Wales should be aware of temporary traffic lights and continuing maintenance on the A5 Menai Bridge between Treborth Road (Antelope Roundabout) and Telford Road. These essential improvements are scheduled to carry on until the end of the year and are anticipated to cause delays, particularly during busy hours.
Meanwhile, in the south, the A48 Swansea Road at Pontlliw is subject to delays due to ongoing electrical works, managed with temporary traffic lights. These works are set to conclude by Monday, 16th June, offering some short-term relief to regular users of this route. In Powys, convoy systems remain operational around the A470/A44 interchange at Llangurig, with completion expected shortly after the weekend.
Other impacted roads include the A470 near Dolgarrog (due to water main works), the A484 between Pantglas and Bronwydd Arms in Carmarthenshire, the B4312 Old St Clears Road in westbound Carmarthenshire, and a range of B-class and A-class roads across the counties of Denbighshire, Wrexham, and Ceredigion. Emergency repairs on the A488 near Hope in Shropshire and significant upgrades on the A487 between Tre’r Ddol and Furnace are further contributing to the list of disrupted travel corridors.
Outside of these headline sites, several other roads are subject to long-term closures and temporary traffic lights connected to public utility, water main, and ongoing roadworks. Completion dates span from later in June to as far away as 2026, signalling extended periods of periodic disruption for some communities and commuters.
While every effort is being made by the relevant authorities to keep disruption to a minimum, drivers are reminded to check live travel information before setting out, consider alternative routes where feasible, and allow extra time for journeys—particularly where delays are being reported. Regular updates will be provided by local sources and national services to help motorists navigate the evolving situation.
As Wales continues to invest in its transport infrastructure, these temporary inconveniences remain a necessary part of ensuring safer, more resilient roadways for all users in the future. For more regular updates on developing road conditions or to sign up for daily travel briefings, motorists are encouraged to visit their preferred regional news service or subscribe to local alerts.