An investigation is underway after thieves stole more than half a million euros worth of heavy machinery and materials from the construction site of Barcelona’s future La Sagrera station. The audacious overnight raid is believed to be the largest single theft to have hit the landmark infrastructure project to date.

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The Mossos d’Esquadra’s regional urban transport unit (Artu) is handling the case. Sources close to the investigation told La Vanguardia that the theft occurred between midnight and 5 AM on Thursday. The owners of the stolen equipment filed a formal report with the Catalan police yesterday, with the initial valuation of the loss exceeding €500,000, pending a final inventory.

A Vulnerable Point in a Mega-Project

The La Sagrera station is one of Europe’s most ambitious urban development projects, set to become a vast transport interchange connecting high-speed rail, regional lines, and the city’s metro system. The sprawling construction site, which straddles the districts of Sant Andreu and Sant Martí, has been a hive of activity for years, marked recently by the demolition of the historic station building to make way for the new structure.

According to investigators, the thieves targeted storage units in a section of the site responsible for building access routes to the future station. This area is reportedly more isolated from the main works, making it an easier target. The assailants had sufficient time to load large, valuable machinery and materials onto their vehicles before leaving the area without raising suspicion.

The stolen goods did not belong to Adif, Spain’s state-owned railway infrastructure administrator. Instead, they were the property of a temporary union of companies (UTE) contracted for the project, which includes construction giants Ferrovial, FCC, Copisa, and Rubau.

A Pattern of Infrastructure Crime

While this is the most significant theft by value at La Sagrera, it highlights a persistent problem facing major public works. Railway construction sites have become, in the words of one source, a “veritable treasure trove” for criminal gangs who specialise in stealing equipment and materials that have a high resale value on the black market.

The issue is not confined to La Sagrera. Authorities have repeatedly warned about rampant copper cable theft from other railway projects, such as the works to bury train lines in nearby Montcada i Reixac. In fact, individuals have been observed cutting down sections of out-of-service catenary cables there in broad daylight. Such crimes pose significant risks and costs to public infrastructure; for instance, a recent case saw a faulty van lead police to a €40,000 haul of stolen copper.

The latest incident at La Sagrera raises serious questions about security at a site that is central to Barcelona’s future. The city recently outlined an ambitious urban plan for the station’s surroundings, with Mayor Jaume Collboni promising €260 million by 2031 to transform the area with new housing and a massive park. With high-value work set to continue for years, protecting the project’s assets will be a critical challenge for both contractors and law enforcement.