Live traffic alerts M48 : Both directions : Severn Bridge : 7.5t weight restriction for heavy goods vehicles from 27/05/25-until further notice Start 27/05/2025 End 23/05/2026 M4 : Westbound : J23A Magor to J26 Malpas : Congestion : Start 11/08/2025 End 11/08/2025 A4232 : Northbound : A48 Interchange to M4 J33 Capel Llanilltern : Congestion : Delays possible : Start 11/08/2025 End 11/08/2025 M4 : Eastbound : J32 Coryton to J30 Cardiff Gate : Resurfacing work : Road closed : Diversions in place : 23/07/25-21/08/25 2000-0600 : Start 23/07/2025 End 21/08/2025 A470 : Southbound : Abercynon to Pontypridd : Resurfacing work : Closed : Diversions in place : 28/07/25-16/08/25 2000-0600 : Start 28/07/2025 End 16/08/2025 A4042 : Northbound : Sebastopol to A472 Interchange : Electrical work : Road closed : Diversions in place : 11/08/25-12/08/25 2000-0600 : Start 11/08/2025 End 12/08/2025 A465 : Westbound : Glynneath to Cwmgwrach : Resurfacing work : Road closed : Diversions in place : 11/08/25-12/08/25 2000-0600 : Start 11/08/2025 End 12/08/2025 M4 : Westbound : J45 Ynysforgan to J46 Llangyfelach : Structural inspections : Road closed : Diversions in place : 11/08/25-13/08/25 2000-0600 : Start 11/08/2025 End 13/08/2025 M4 : Eastbound : J32 Coryton to J30 Cardiff Gate : Lane closed : Due to Maintenance works : Delays possible : Start 24/07/2025 End 20/08/2025 OF View more live traffic alerts