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Agua Negra binational tunnel

Project Stages

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Early Works
Current Stage: Additional environmental evaluation
Start: 04/2017
In Construction
Under Construction
Start: 03/2019
Completion: 12/2027
In operation
Project Details


The Agua Negra tunnel project calls for the construction of two parallel tunnels, one in each direction. The tunnels will expedite transit between the province of San Juan in Argentina and the region of Coquimbo, Chile, which are connected by the Agua Negra mountain pass that reaches an altitude of 4800m. Its construction will also improve commerce in the region, making it easier to transport products from San Juan to the port in Coquimbo. The work is part of the wider Bioceanic corridor plan that will improve transport links between Porto Alegre, Brazil and Coquimbo.

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Principal Works

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Related Companies

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  • * Figures and dates are as per the latest publicly available information, as well as information gathered by BNamericas reporters and analysts and are subject to change.

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Key Specs

Full Name
Agua Negra binational tunnel
Project Type
Development Phase
Additional environmental evaluation
Project Status
Project Capacity
28  km (kilometers)  Tunnel
US$ 1.5bn
Completion Date

The project will be located in the Agua Negra pass, linking Argentina's San Juan province with Chile's Coquimbo region (IV).

* The coordinates indicated on the map represent an intermediate point between the start and end of the project.

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Owner / operator
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Director of Investment Development
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Representative of the Public Works Ministry
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Director of Minor Works
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Director of Project Management
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