Severn Bridge Status: closures, without the guesswork

Field notes

The alert form lets visitors narrow notifications by bridge, direction, selected days, and a time window; it also offers separate notices for closures, reopenings, planned works, and day-before reminders. The page explains that the M48 has no wind barriers and closes at 40-knot gusts, while the M4 bridge has barriers; at 70 knots, it says both close and gives a diversion route. The site identifies itself as unofficial and points to National Highways data.