Severn Bridge Diversion Route
During the restrictions, advance warning signs are displayed and traffic diverted onto the following route:
Westbound to Chepstow:
- Use M4 Second Severn Crossing, Exit J23a (Magor), M4 eastbound, M48
Eastbound from Chepstow:
- M48 westbound, M4 J23a, use M4 Second Severn Crossing
Diversion Map
