Live traffic alerts A458 : Both directions : Trewern : 15/06/26-23/06/26 1900-0600 : Resurfacing work : Closed : Diversions in place : Start 15/06/2026 End 23/06/2026 A55 : Westbound : J14 Madryn : Offslip closed : Onslip closed : 21/06/26-22/06/26 1930-0600 : Start 21/06/2026 End 22/06/2026 A55 : Westbound : J13 Abergwyngregyn : Onslip closed : Offslip closed : 21/06/26-22/06/26 1930-0600 : Start 21/06/2026 End 22/06/2026 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 A470 : Westbound : Llanidloes : Resurfacing work : Temporary traffic lights : Slow traffic : 15/06/26-17/07/26 0830-1700 : Start 15/06/2026 End 17/07/2026 A458 : Both directions : Foel : Resurfacing work : Temporary traffic lights : Slow traffic : 15/06/26-30/07/26 0900-1800 : Start 15/06/2026 End 30/07/2026 OF View more live traffic alerts