Terschelling could be cut off from mainland as harbor quays deteriorate
The harbor quays on Terschelling are in critical condition, with sinkholes in the road and leaning walls reportedly threatening the island’s main transportation artery, EenVandaag reports. Repairs are estimated at 45 to 50 million euros, but the island of nearly 5,000 residents has only 15 million euros available, leaving officials seeking support from the national government.
Councilor Gossen Bos from the political party Samen Terschelling warned that the consequences could be severe. “This road is the lifeline of the island,” he told EenVandaag. “If the quay collapses, Terschelling will be locked down; daily life comes to a halt.” Bos has raised concerns about the harbor’s state since 2012 and has sought to divert heavy traffic away from the quays.
The situation could reportedly reach a critical point by July 1, when the main road could be fully closed if urgent repairs are not made. Johan Haarsma, a member of the local business association, warned, “If that road closes, the island shuts down. There are alternative paths through nature, but that’s not a realistic solution.”
The problem is part of a broader national pattern. Decades of government policy transferred smaller infrastructure assets—including harbors, dikes, and bridges—to municipalities with funding that is now insufficient. In many cases, municipalities allocated little or no budget to ongoing maintenance. Other harbors, including those in Texel and Urk, reportedly face similar financial strains, with repair costs deemed unaffordable.
Mandy Korff, an expert in quay walls and geotechnics with Deltares and TU Delft, said rising maintenance requirements have increased costs. “We also impose higher standards for what we build,” she told EenVandaag. “We want structures to last 100 years, trees to remain standing, and work to proceed without disruption. All of this has value, and municipalities must weigh these priorities.”
A 2023 TNO report noted that delayed maintenance, labor shortages, and rising material costs have accelerated the problem. Research by Deltares and TU Delft is identifying the highest-risk areas and exploring whether some infrastructure can remain in service longer. Korff suggested a national plan, akin to the original Dutch Delta Plan, to coordinate technical expertise and workforce development. The original Delta Plan, launched in the 1950s after the North Sea flood of 1953, was a nationwide effort to strengthen dikes and improve flood defenses to protect the Netherlands from future floods.
A parliamentary committee debate on infrastructure maintenance is scheduled Thursday in the Tweede Kamer, where the issue is expected to be discussed.
Minister Vincent Karremans of Infrastructure and Water Management stated that municipalities are primarily responsible for maintenance costs, noting that the ministry itself faces financial shortages. “Based on further analysis and the TNO 2023 report recommendations, parties will consult. There is no financial room in the Mobility Fund or Delta Fund,” Karremans said.
Despite limited funding, the ministry is collaborating with the Ministry of the Interior, Finance, the Association of Dutch Provinces, and the Association of Dutch Municipalities to study local infrastructure maintenance challenges. “We aim to enhance the capacity of all governments to address these tasks. Sharing knowledge and expertise can certainly help,” Karremans added.
Minister Vincent Karremans confirmed that replacing quay walls and sheet piles could add roughly 16 billion euros to municipal budgets across the country, though the exact cost remains uncertain. These expenses would come on top of a 261 billion-euro estimate by TNO in 2023 for repairing and renewing national infrastructure, which did not fully account for quay walls.
