LANE closures in both directions are set to hit a stretch of the A55.

The single-lane closures will be between Junction 23 (Llanddulas) and near the footbridge at Colwyn Bay - known locally as the Rainbow Bridge.

The closures are due to work to install a contraflow will begin late evening on Sunday 8 September as essential repair work begins to the A55 Kneeshaw Lupton under-bridge eastbound carriageway.

This will see a single lane of traffic travel in each direction on the westbound carriageway 24 hours a day for up to five weeks, coming into effect this coming Sunday (September 8).

Welsh Government said work will be taking place on a 24 hours a day, seven days a week basis to ensure it is completed as quickly as possible.

Due to the nature of the improvements which includes hydro-demolition and deck preparation, two-metre high board will be installed with work taking place behind these. This measure is vital in ensuring the safety of the travelling public.

A 40mph speed restriction will be in place through the contraflow system whilst work is carried out.

Welsh Government Transport Minister Ken Skates said: “This coming Sunday evening when traffic flows have eased, work will begin to install a contraflow set for the beginning of essential work to repair the Kneeshaw Lupton under-bridge on the eastbound carriageway.

“More than 55,000 vehicles on average cross this part of the A55 each day and some of the joints linking the bridge deck are over 30 years old, so this work is now needed to ensure the road is safe and reliable for years to come.

Mr Skates said there is no guarantee work will be completed ahead of schedule, but reiterated that the closures are only made when deemed absolutely necessary.

Mr Skates added: “This is the final stage of work on the Kneeshaw Lupton underbridge and I’d like to thank the travelling public for their patience and understanding whilst it is carried out.”

Updates of the essential improvement work will be available on the Traffic Wales website ( and twitter page (@TrafficWalesN).