Early on Monday morning, June 1, a truck fire on the A29 motorway near Avanca brought the corridor to a standstill, trapping thousands of commuters and freight vehicles for over four hours. By 8:30 AM, emergency crews had restored one southbound lane, though congestion persisted through the morning.
What Happened
The incident began around 4:00 AM at kilometer 15.6 on the A29 southbound, in the Avanca area within Estarreja municipality in Aveiro district. A heavy truck erupted in flames with sufficient intensity to force an immediate complete closure of all traffic heading south. For approximately two hours and fifty minutes, the motorway remained entirely blocked as firefighters engaged the blaze and prevented secondary incidents.
By 6:50 AM, when civil protection authorities confirmed the closure to media outlets, emergency crews were still managing active flames. No other vehicles collided with the burning truck, and no drivers or passengers suffered injury.
Emergency Response
The Aveiro Sub-Regional Civil Protection Command deployed 19 personnel and 8 vehicles to the scene, including fire engines, rescue support units, and traffic management personnel. Their operations involved extinguishing the blaze, cooling the roadway surface, removing the burned-out truck chassis, and establishing safe passage for one lane while maintaining adequate perimeter security.
By 8:30 AM, crews had cleared enough of the roadway to permit southbound traffic through a single operational lane. This partial reopening allowed the four-hour traffic backlog to begin dispersing, though congestion extended well into late morning as thousands of vehicles filtered back onto the motorway.
What Remains Unclear
Portuguese authorities have not publicly disclosed the fire's root cause. The truck's cargo manifest and whether it transported hazardous materials have not been released publicly. As of mid-morning on June 1, the Portugal Civil Protection Command had not provided a timeline for full reopening of both southbound lanes. The destroyed truck awaited removal by specialized equipment, and heat damage assessments to the asphalt were underway.
Practical Guidance for Commuters
Drivers who regularly use the A29 between Porto and the coastal towns of Aveiro should monitor real-time conditions via the Infraestruturas de Portugal traffic management system, which provides updates through its website and mobile app.
When encountering active incidents on motorways, Portugal's Brisa safety recommendations advise drivers to remain calm, follow emergency personnel instructions, and respect signage. If forced to stop during an incident, drivers should park on the right shoulder, keep the engine running, maintain headlights and hazard indicators active, close windows, and activate air recirculation.
