A55 crash forces closure, Wales Air Ambulance deployed
The incident occurred shortly before 21:45 on 30 September, between Junction 26 at St Asaph Business Park and the Rhuallt Hill stretch.
A serious collision on the A55 near St Asaph on Wednesday night triggered a large‑scale emergency response and forced the expressway to close in both directions.
The incident occurred shortly before 21:45 on 30 September, between Junction 26 at St Asaph Business Park and the Rhuallt Hill stretch.
Police, fire crews and ambulance teams were dispatched to the scene within minutes of the crash being reported.
North Wales Police confirmed that the collision involved multiple vehicles, though the exact number of parties involved has not yet been disclosed.
Firefighters worked to stabilise the wreckage and secure the site while paramedics attended any injured parties.
The Wales Air Ambulance was called from its Cardiff base, with the helicopter touching down on the carriageway near St Asaph to provide rapid medical assistance.
Witnesses described the aircraft landing on the hard shoulder amid flashing emergency lights, a manoeuvre that underscored the seriousness of the situation.
Following the crash, the A55 was closed between Junction 27 (St Asaph, The Roe) and Junction 28 (Rhuallt/Waen), prompting traffic controllers to divert motorists onto a network of local roads.
Drivers were rerouted via the B5402 and the A525, causing congestion on secondary routes that are not designed for high‑volume traffic.
Commuters reported long queues forming on the A525, with some motorists forced to travel an additional 15 minutes to bypass the closure.
Traffic Wales issued regular updates, urging drivers to avoid the area and to seek alternative routes until the incident was resolved.
By the early hours of Thursday, crews had cleared the wreckage and the road surface was deemed safe for reopening.
Traffic Wales confirmed that the A55 reopened at approximately 04:30, allowing traffic to flow normally through the previously affected stretch.
Road‑side cameras showed a steady stream of vehicles re‑entering the expressway as the diversion signs were switched off.
No further details about the identities or conditions of those involved have been released, and police have appealed for anyone with additional information to come forward.
An investigation into the cause of the crash is now under way, with officers examining vehicle data, road conditions and witness statements.
The incident has reignited concerns over safety on the A55, a key arterial route linking North Wales with the Irish Sea coast.
Local councillors have called for a review of traffic management measures on the stretch, citing the potential for future incidents during peak travel periods.
Transport for Wales has pledged to monitor the situation closely and to implement any necessary improvements to signage and speed enforcement.
As the community processes the aftermath, emergency services have highlighted the importance of rapid response capabilities, including the vital role played by the Wales Air Ambulance.
Authorities expect the investigation to take several weeks, after which a full report will be published detailing the findings and any recommended safety actions.