Valkenburg tower collapse: Rotting concrete identified three years ago
The Wilhelminatoren (Wilhelmina tower), which collapsed overnight from Saturday to Sunday in Valkenburg, had been suffering from concrete rot for at least three years. The Rijksdienst voor het Cultureel Erfgoed confirmed to RTL Nieuws that the deterioration was identified in 2022. Emergency services were alerted early Sunday morning when residents reported that the historic tower had disappeared from view. The collapse left a massive pile of rubble, but no injuries were reported.
In 2022, concrete rot was reportedly discovered on the sixth floor of the Wilhelminatoren during a subsidy application for maintenance, according to Arno Schut of the Rijksdienst voor het Cultureel Erfgoed. While the exact cause of the collapse is still under investigation, Schut confirmed that the degradation was the “primary defect.”
“If an upper floor breaks and crashes downward in sections, it could trigger a chain reaction leading to total collapse,” Schut told RTL.
Valkenburg Mayor Daan Prevoo also confirmed that the floor on the sixth level was in need of replacement. “It is plausible that there is a causal link, but we must conduct a factual investigation before determining the exact cause,” Prevoo stated.
Concrete rot significantly weakens structures by causing embedded steel reinforcements to corrode, leading to cracks and rust-colored stains.
Despite the known deterioration, repairs had reportedly not yet been carried out. Schut revealed that preparations were underway, including engagement with a structural engineering firm. A permit application for restoration work was submitted in October 2023, but no work had started before the tower fell.
“It seemed like everyone was on the verge of beginning repairs. It likely wasn’t perceived to be as serious as it turned out to be,” Schut explained.
Mayor Prevoo stressed that the national government is responsible for investigating the cause of the collapse, while the municipality serves as a regulator. He also pointed to a broader issue of neglect when it comes to historic landmarks.
“This should never have happened,” Prevoo said. “We were lucky—if this had occurred just a few hours later, there could have been fatalities.”
He also noted that property owners are regularly reminded of their duty to maintain historic structures. “We frequently have to tell owners: ‘You are required to keep it in good condition.’ That was also the case here.” The owner of the Wilhelminatoren reportedly has not yet responded to requests for comment from RTL Nieuws.
