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Coordinated Attacks Hit Turin-Lyon Construction Sites: €1M Damage at Chiomonte

Coordinated attacks on four Turin-Lyon rail sites cause €1M damage at Chiomonte. No worker injuries reported. Festival Alta Felicità drew 20,000 participants.

Coordinated Attacks Hit Turin-Lyon Construction Sites: €1M Damage at Chiomonte
Mountain valley construction site with heavy machinery and equipment visible across Alpine landscape

TELT, the binational corporation overseeing the Turin-Lyon high-speed rail project, faces €1 million in immediate repair costs at its Chiomonte construction site following coordinated attacks on four separate work zones across Val di Susa—an Alpine valley northwest of Turin—on Friday afternoon. While approximately 20,000 people participated in the No TAV movement's tenth annual Festival Alta Felicità march, violent groups broke away from the main gathering to assault the construction sites. The full financial toll from assaults at Salbertrand, Susa, and San Didero remains under assessment, while the company scrambles to determine when normal operations can resume.

Why This Matters

Infrastructure delays ripple outward: The Chiomonte site employs 700 workers at peak activity—1,000 across all Italian zones—and any suspension compounds the project's already contested €11.8 billion price tag.

Tax revenue at stake: Compensation funds totaling €96 million promised to 11 affected municipalities rely on construction progress; delays affect disbursement timelines.

Security cost escalation: Law enforcement personnel were injured during clashes, signaling heightened protection expenses for future operations.

Four Work Zones Breached in Single Afternoon

The incidents unfolded Friday afternoon as part of the Festival Alta Felicità, the No TAV movement's tenth annual gathering, which drew approximately 20,000 participants from staging areas in Venaus. Groups of violent protesters severed perimeter fencing, torched offices, warehouses, and surveillance systems, and destroyed heavy machinery at multiple locations. The Italian State Police and Carabinieri deployed water cannons and tear gas; attackers responded with Molotov cocktails and stones. Multiple law enforcement and municipal vehicles were set ablaze during the confrontations.

At Chiomonte—the primary Italian worksite for the 65-kilometer cross-border tunnel—demonstrators incinerated an aircraft hangar housing oversized equipment and crippled the video monitoring network. TELT engineers confirmed substantial damage to gallery service infrastructure, but noted zero casualties among on-site workers. Debris removal and workspace restoration timelines remain undefined pending structural assessments.

The A32 Turin-Bardonecchia motorway closed between Oulx and Susa Est for public safety; the Turin-Modane rail line suspended service for several hours. Both corridors have since reopened, though investigators continue cataloging evidence across all four sites.

What This Means for Municipalities

Chiomonte Mayor Roberto Garbati articulated the bind facing host communities: violent disruptions compound construction delays that already stretch compensation timelines. His municipality has received €18 million of a promised €26 million earmarked for infrastructure offsets—funds used to install photovoltaic arrays, modernize street lighting, and develop vineyard parcels. Yet projects remain incomplete.

"We've spent fifteen years enduring disruptions," Garbati told ANSA, emphasizing unfulfilled promises. TELT pledged to bring over 300 workers to the area, spurring locals to renovate rental properties that now sit vacant. A Neolithic archaeological site—considered Europe's most significant—remains inaccessible within the security perimeter, its artifacts housed at Turin's Royal Museums since 2022. Planned improvements to house construction crews and build parking infrastructure lack funding.

The mayor called for accelerated timelines despite acknowledging yesterday's violence as "incomprehensible in a civil society." His pragmatic calculus reflects a broader tension: communities endure land seizures and daily inconvenience with limited tangible benefit during construction phases, creating grievances the No TAV movement leverages.

Across the eleven affected municipalities, compensation packages range from €4 million (Meana) to €18 million (Susa). Chiomonte's allocation exceeds that of Salbertrand (€15 million), Bussoleno (€10 million), and Giaglione (€8 million). The Piedmont Region's Law 4/2011 mandates these "accompanying measures," but disbursement follows bureaucratic schedules that residents describe as glacial.

The Movement's Staying Power

The No TAV collective framed yesterday's actions as a demonstration of enduring resolve: "The movement has shown once again it has the strength to reach where territory devastation is the daily norm," read an official statement referencing the 2011 "Free Republic of Maddalena" occupation. Founded in the early 1990s, the No TAV (No Train at High Speed) campaign argues the rail link duplicates existing infrastructure serving declining freight volumes. Activists cite environmental risks from excavating through the Alpine ecosystem, raising concerns about asbestos exposure and aquifer contamination. TELT counters that the project employs cutting-edge tunnel boring machines—the first Italian TBM, a 235-meter behemoth named Viviana, arrived from Germany's Herrenknecht factory in March and will begin excavation in 2027 after assembly in a mountain cavern. A second machine is being prepared at the Modane site to drill the cross-border section.

Project Status and Next Phases

As of June, crews had excavated 50 kilometers of the total 164-kilometer tunnel network, including 21 kilometers of the main base tunnel—about 30% completion. Civil works contracts awarded between 2021 and 2023 drove €1 billion in construction during 2024 and another €1 billion in 2025. The workforce is projected to peak at 4,000 personnel across Italian and French sections between 2027 and 2028, when mechanized boring hits maximum intensity.

The cross-border section will feature two parallel rail tunnels, four access shafts (currently the only entry points to excavation zones), and 204 emergency bypass corridors. At Saint-Martin-la-Porte on the French side, the Viviana TBM is currently grinding through a geologically complex zone at reduced speed, applying techniques refined during earlier southern tunnel work. The machine targets a 9-kilometer stretch toward the Italian frontier.

TELT Director General Maurizio Bufalini had emphasized in March that the Italian TBM's 10-meter-diameter cutting head exceeds dimensional limits for European roadways, requiring transport to Chiomonte via hundreds of specialized trucks—a logistical operation now potentially complicated by heightened security protocols and community friction.

The Path Forward

TELT officials reiterated that "democratic dialogue remains the only viable path," though the company's information desks in affected towns see declining foot traffic. Residents report staff redirect inquiries to phone lines and email addresses rather than resolving issues on-site—a pattern Mayor Garbati described as courteous but ineffective.

The No TAV movement's capacity to mobilize thousands and breach multiple secured perimeters simultaneously suggests coordination that law enforcement will need to counter with expanded resources. Italian authorities are analyzing evidence to identify participants involved in the violent incidents. The legal framework for prosecuting property destruction exists, but past cases have moved slowly through courts.

For communities like Chiomonte, the calculus is stark: construction persists regardless of local opposition, yet delays triggered by protests extend the period before residents see infrastructure benefits or final compensation payments. The mayor's call to "treat municipalities like mine better" reflects a constituency fatigued by disruption yet resigned to the project's inevitability. Whether TELT and regional officials accelerate stakeholder engagement or rely on security hardening to maintain schedules will shape the social license to operate through 2028's peak construction phase.

The Turin-Lyon corridor remains a flashpoint where infrastructure ambitions collide with Alpine preservation values—a 30-year dispute now measured in millions of euros of damage and timelines that stretch further with each confrontation.

Author

Elena Ferraro

Environment & Transport Correspondent

Reports on Italy's climate challenges, energy transition, and infrastructure projects. Approaches environmental journalism as a bridge between scientific research and public understanding.