Severn Bridge Shut: M48 Closed Both Ways as High Winds Hit
M48 Severn Bridge closed due to strong winds

Drivers across the South West and Wales are facing significant disruption after the M48 Severn Bridge was closed in both directions due to dangerously strong winds.

Bridge Shut for Safety

The closure, announced by National Highways on Sunday, 11 January 2026, affects the crossing between Junction 1 and Junction 2 at either shore of the Bristol Channel. The decision was taken as high winds continued to batter the Gloucestershire crossing into Wales, posing a serious risk to traffic.

Authorities have warned all road users to avoid the area and have provided a clear alternative. Motorists are being directed to use the M4 Prince of Wales Bridge between Severn Beach near Bristol and the Welsh town of Caldicot.

Traffic Impact and Official Advice

In an official statement, National Highways confirmed: “The M48 Severn Bridge in Gloucestershire remains closed in both directions between J1 and J2 due to strong winds. Road users are advised to use the M4 Prince of Wales Bridge as an alternate route.”

Early data from Google Traffic shows the knock-on effect of the closure, with some congestion building around junction 22 as rerouted vehicles join the M4 to make their crossing.

Looking Ahead for Commuters

The closure serves as a stark reminder of how severe weather can instantly impact major transport links. Drivers planning journeys between England and Wales are urged to check live traffic updates from National Highways before setting out. The situation will be monitored closely, with the bridge expected to reopen only when wind speeds drop to a safe level.