Overview
- A large sinkhole opened at the Montcada–Vallbona soterramiento works on Wednesday and engulfed a heavy crane, forcing suspension of the R2, R2 Nord and R11 commuter lines and creating heavy passenger congestion at Montcada i Reixac stations.
- Adif says it has stabilised and repaired the hole by continuously injecting mortar and concrete and on Saturday handed the section to Renfe so it can run test movements before restoring normal service.
- Engineers have not reached a definitive cause; Adif and geologists report complex local hydrogeology and say technicians are studying why work‑shaft pilings or retaining walls failed.
- The collapse drained part of the Rec Comtal canal, killed fish and interrupted a minor supply used in the Trinitat potabilisation chain, prompting temporary diversions and concern about effects on the Baix Besòs aquifer.
- The accident raises fresh doubts about the soterramiento’s schedule and costs, deepens local frustration with long works and spotlights calls for tougher monitoring, clearer oversight and faster communication to residents.