A5 Menai Bridge: frequently asked questions

The bridge is open but a 7.5 tonne weight limit and a 3-metre height limit is in place. Vehicles that are heavier or taller than the limits should use the Britannia Bridge instead.

Repair works are continuing and  the under-bridge scaffolding has been installed.

Certain tasks may require a lane closure (with traffic lights) or full bridge closure. We will try to provide information on these closures at least a week in advance.

Upcoming closures include:

• On 13 and 14 May between 10am and 6pm – lane closure, traffic lights will facilitate travel in both directions, still open to pedestrians
• 15 May from 2pm until 16 May at 6pm - full bridge closure – vehicle traffic please use Britannia bridge, still open to pedestrians
• 17 May from 8pm until 18 May at 6am – lane closure, traffic lights will facilitate travel in both directions, still open to pedestrians
• 18 to 21 May, daily between 10am and 6pm lane closure, traffic lights will facilitate travel in both directions, still open to pedestrians

For more information, on restrictions and closures visit Traffic Wales. 

Vehicles up to 7.5 tonnes and under 3 metres in height are allowed to cross the bridge.

Enforcement is in place to ensure that the 7.5 tonne weight limit is complied with. Failure to comply could result in prosecution and further bridge closures.

Vehicles that are heavier or taller than the limits should use the Britannia Bridge instead.

In normal conditions emergency vehicles will use the Britannia Bridge. However, if there are issues with Britannia Bridge, emergency services can use the Menai Suspension Bridge following special travel plans.

The latest works will include:

• painting the underdeck, parapets and bearing access
• repairing concrete corbels
• recalibrating the land saddle
• upgrading lighting

It is very uncommon for the A55 Britannia Bridge to close. If it does close, it is usually only for a few hours.

When there are high winds certain vehicle types are advised not to cross during certain conditions.
Following a strategy review, wind speed limits have been changed for some vehicle types. So the bridge should remain open to more vehicles, more often and any closure will be as short as possible. This has helped Heavy Goods Vehicles (HGVs) to continue to cross the A55 Britannia Bridge during adverse weather events.

We are investigating stacking sites on both the mainland and Isle of Anglesey which should alleviate the situation during a full closure of the Britannia Bridge for HGVs.

If the Britannia Bridge closes, North Wales Police will help coordinate the use of Menai Suspension Bridge for vehicles weighing less than 7.5 tonnes.

The phase 1 works to replace the bridge hangers started on 4 September 2023 and were completed in October 2024.

More information about the October 2022 closure and repairs.

Businesses are encouraged to access support via our dedicated Business Wales service: Business Wales: supporting businesses in Wales.

Many smaller businesses already qualify for 100% rates relief in Menai Bridge and pay no non-domestic rates. During the phase 1 works, Isle of Anglesey County Council identified 30 additional Menai Bridge businesses that were eligible for rates relief under the retail, leisure and hospitality rates relief scheme. The Council invited those businesses to apply.

If you think your business might be eligible for rates relief please contact Isle of Anglesey County Council to discuss further. Further contact information, including application forms is available at Isle of Anglesey County Council: Retail, leisure and hospitality rates relief scheme.

Businesses which are liable for non-domestic rates may be eligible to apply to the Valuation Office Agency for a temporary reduction in rateable value. To find out more, go to: GOV.UK: Find a business rates valuation.