# Tren Patagónico derailment and infrastructure damage

> Live situation record from CLSTR: https://clstr.news/situations/tren-patagnico-derailment-and-infrastructure-damage
> Updated: 2026-10-21T11:05:00.000Z. Sources: 4. Developments: 2.

In early October 2026, the Tren Patagónico service experienced a derailment on the Viedma–Bariloche route between Sierra Colorada and Los Menucos. The incident, involving a main locomotive and a cargo car, was caused by extreme weather and intense rainfall that washed away a railway embankment.

While 140 passengers were on board during the derailment, no injuries were reported. Following the incident, authorities coordinated bus transportation for passengers. 

Repair efforts by the provincial company, supported by the Government of Río Negro, involved re-railing the locomotive and freight car while rebuilding the tracks and embankment. Due to the damage, passenger services were suspended on several dates throughout late October to allow crews to restore safe circulation.

## Timeline

### 2026-10-21: Tren Patagónico repairs infrastructure after derailment

Tren Patagónico is repairing tracks and re-railing equipment following a derailment near Sierra Colorada caused by heavy rains, leading to service suspensions between Viedma and Bariloche.

2 sources. https://clstr.news/cluster/tren-patagnico-repairs-infrastructure-after-derailment

### 2026-10-12: Tren Patagónico derailment in Argentina caused by extreme weather

Extreme weather and heavy rains caused a Tren Patagónico locomotive to derail between Sierra Colorada and Los Menucos, Argentina. No passengers were injured, but service is suspended for repairs.

2 sources. https://clstr.news/cluster/tren-patagnico-derailment-in-argentina-caused-by-extreme-weather

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Cite as: Tren Patagónico derailment and infrastructure damage. CLSTR, https://clstr.news/situations/tren-patagnico-derailment-and-infrastructure-damage