Live traffic alerts A40 : Both directions : Crickhowell : Roadworks : 04/05/26-11/05/26 1900-0700 : Start 04/05/2026 End 11/05/2026 A55 : Eastbound : Pen-y-Clip Headland : Closed : Contraflow Via Pen Y Clip Tunnel : Width limit 3.2m : Overnight : 05/05/26-10/05/26 1930-0700 : Start 05/05/2026 End 10/05/2026 M4 : Eastbound : J35 Pencoed : 06/05/26-12/05/26 2000-0600 : offslip : Closed : Start 06/05/2026 End 12/05/2026 A470 : Both directions : Llanidloes : 08/05/26-11/05/26 2300-0500 : Level Crossing Improvement work : Road closed : Local diversions in place Start 08/05/2026 End 11/05/2026 A489 : Both directions : Caersws : Moat Lane level crossing : Road closed : Diversions in place : 08/05/26-11/05/26 2330-0500 : Start 08/05/2026 End 11/05/2026 M4 : Westbound : J32 Coryton to J33 Capel Llanilltern : Road closed : 09/05/26-11/05/26 2000-0600 : Diversions in place : Start 09/05/2026 End 11/05/2026 A40 : Eastbound : Monmouth Dixton R/bout to Servicebridge : 14/04/26-30/06/26 0600 : Contraflow : Start 14/04/2026 End 30/06/2026 A487 : Both directions : Aberystwyth Commins Coch : Improvement work : Temporary traffic lights : 02/02/26-23/06/26 0900-1600 : Start 02/02/2026 End 23/06/2026 A40 : Eastbound : Westbound : Abergavenny Hardwick R/bout to Abergavenny : 04/03/26-25/06/26 0930-1530 : Roadworks : STOP/GO in use : Start 04/03/2026 End 25/06/2026 M4 : Eastbound : M4 St Julians Viaduct : 27/04/26-30/11/26 0600 : Start 27/04/2026 End 30/11/2026 OF View more live traffic alerts