18 road closures on M4 and major Welsh roads to cause summer holiday getaway misery this week

NewsLatest Wales NewsTraffic and TravelThere are road works scheduled throughout Wales10:23, 19 Jul 2026There's disruption ahead for drivers travelling on main roads across Wales from Sunday as maintenance work is carried out. It will affect people who use A-roads including the A470 near and in Pontypridd and the A465 in Neath. However many more routes will see disruption, including part of the M4.‌Here, we've compiled information published by Traffic Wales detailing all the disruption ahead that you need to be aware of. Stay in the know by making sure you’re receiving our daily newsletter.‌M4 J25A Grove Park, eastbound: Bridge closed for maintenance work from July 20 to July 27 from 8pm to 6am. Diversion in placeA470 Upper Boat to Nantgarw, southbound: Road closed for carriageway maintena