Strong winds across the bridge can be hazardous to traffic.
Traffic restrictions, reduced speed limits and a bridge closure may be needed to ensure the safety of drivers.
Find further information below about how we deal with windy conditions on the bridge.
We use dedicated forecasts and monitoring equipment on the bridge to help measure wind speeds. These forecasts are more accurate than those provided in the media and may differ from what is reported.
Based on weather forecasts, we follow the below guidance:
Wind speed of over 30mph:
- 30mph speed limit on the bridge.
Wind speeds over 40mph:
- 30mph speed limit on the bridge
- restrictions on the bridge for motorkbikes, caravans and cyclists.
Wind speeds over 63mph:
- 30mph speed limit on the bridge
- restrictions on the bridge for motorbikes, caravans and cyclists.
- only cars and vans (derived from cars) can use the bridge.
Wind speeds over 70mph:
- the bridge will be closed to all traffic until the speed has decreased.
In the event of bridge closure:
- The Menai Suspension Bridge will be used as a diversion route for all vehicles under 7.5t.
- Vehicles over 7.5t should postpone their journeys until the Britannia Bridge has reopened. HGVs on Anglesey will be re-routed to Cybi Park, plot 9 parking, remaining there until restrictions lift.
In preparation for a potential full closure we will close lane two on both sides of the bridge. This traffic control measure must be set in advance when wind speeds are lower for safety.
VMS signs will inform drivers that the bridge is closed.
Stay up to date
Get the latest information about the bridge by checking the TrafficWalesN Twitter and our Facebook page Traffic Wales North & Mid, the road cameras and traffic alerts.