All-Terrain Crane Fire Forces Closure of Conwy Tunnel in North Wales
- Meagan Wood
- Jun 20, 2025
- 3 min read
30-Second Takeaway
A major road tunnel in North Wales was closed for three days after an all-terrain crane caught fire while travelling through the Conwy Tunnel on the A55. The incident occurred on Thursday afternoon in the westbound bore and, while no injuries were reported, caused significant disruption, including a 35-mile diversion. The tunnel fully reopened on Sunday following recovery and repair works.
Incident Overview
An all-terrain crane fire caused the full closure of the Conwy Tunnel on the A55 in North Wales last week, leading to major traffic disruption across the region.
The incident occurred Thursday afternoon June 19th in the westbound lane of the tunnel while the crane was in transit.
What Is Known
Location: Conwy Tunnel, A55, North Wales
Date: Thursday afternoon
Crane type: All-terrain crane
Model: Two-axle Terex
Owner: Kendley Steel
Injuries: None reported
Following the fire:
The entire tunnel was closed for recovery
A 35-mile diversion was implemented
The eastbound lane reopened Friday morning using a contraflow system
Full reopening occurred on Sunday, once repairs were completed
Emergency Response
North Wales Fire and Rescue Service attended the scene and managed the incident within the confined tunnel environment.
A spokesperson for the service said:
“We fully recognise the significant impact that incidents like this can have on communities, businesses, and individuals across Wales. This was an emergency situation, and the tunnel had to be closed for the safety of all, and while a diversion was in place I know this would have added to journey time and caused disruption.”
Tunnel Impact and Recovery
The confined nature of the tunnel required:
Full closure to allow safe firefighting operations
Careful recovery of the burned crane
Inspection and repair of tunnel infrastructure, including road surface and safety systems
The westbound bore remained closed longer due to fire damage and cleanup requirements.
Investigation Status
At the time of publication:
No official cause of the fire has been released
No mechanical conclusions have been confirmed
Investigations are expected to consider:
Engine bay fire origins
Fuel or hydraulic systems
Vehicle condition prior to entering the tunnel
Crane Hub Global will update this article if verified findings are published.
Why Crane Fires in Tunnels Are High Risk
Vehicle fires involving cranes in tunnels present elevated risk due to:
Confined spaces limiting heat and smoke dissipation
Restricted access for emergency services
Risk to tunnel structural elements
Potential for extended closures and regional disruption
Even when no injuries occur, secondary impacts can be severe
Industry Reminder
While crane fires are not uncommon, incidents inside tunnels carry disproportionate public and infrastructure risk.
This event highlights the importance of maintenance discipline, route planning, and emergency preparedness when moving heavy equipment on public roads.
Editorial Note
Crane Hub Global reports on crane-related incidents to support industry awareness and prevention. This article reflects confirmed information available at the time of publication and will be updated if further details emerge.
How Incidents Like This Can Be Mitigated
Pre-Transit Vehicle Checks
Cranes travelling long distances should undergo engine bay, fuel, and hydraulic inspections before transit.
Fire Detection and Suppression
Well-maintained onboard fire suppression systems can help limit escalation.
Tunnel Transit Planning
Where possible, operators should:
Avoid tunnel routes with high-risk plant
Notify authorities when moving heavy or specialist vehicles
Emergency Preparedness
Drivers should be trained in immediate shutdown and evacuation procedures if fire is suspected.
