Overview
- The Paso Cristo Redentor tunnel was closed Monday at 18:00 and the local barriers at Uspallata and Guardia Vieja were lowered at 16:00 to avoid vehicle buildup before the shutdown.
- Authorities cited multiple forecast models and an official yellow alert for snowfall as the basis for the preventive, full closure of the international crossing to all vehicle types.
- Return traffic from the long weekend produced long queues at the Argentine complex of Horcones/Roque Carranza with reported waits of about 40 minutes for customs processing.
- Binational border coordinators said they will issue a new bulletin at 09:00 on Tuesday to evaluate whether conditions allow reopening and urged travelers to check official channels before attempting the crossing.
- The corridor is highly weather‑sensitive and has seen extended 2026 closures linked to strong mountain storms and El Niño, which raises the risk of further disruption and extra overnight stays for stranded travelers.