All-Terrain Crane Fire Forces Closure of Conwy Tunnel in North Wales

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.