Agua Negra Tunnel: Andes mega-project to link Argentina and Chile

Argentina and Chile are advancing the Agua Negra Tunnel, a major infrastructure project that will bore through the Andes to connect San Juan province with Chile's Pacific coast. The tunnel is part of the Bioceanic Corridor, aimed at reducing export freight costs by linking central Argentina and Brazilian Atlantic ports to Chilean Pacific ports. Construction is ongoing, with a tunnel boring machine set to drill through the Andes; the project's completion timeline and full economic impact remain uncertain.