Agua Negra Tunnel
Why the Agua Negra tunnel?
Argentina and Chile share one of the longest borders in the world, along the impresive Andes. Up to recently there were only one proper pass for commercial exchanges along the more than 4000 km length of this natural border. It seems impossible to project the development of the south american region and a satisfactory regiona
l integration without more numerous and adecuate transit options.
Why in Agua Negra?
The Agua Negra pass is one of the 13 border-crossing roads selected by Argentina and Chile in a bi-national plan to improve connectivity between the 2 countries. Agua Negra is idealy located in the central region of both countries, and represents a complementary solution to the current connection of Cristo Redentor between Mendoza and Valparaiso.
What are the basics characteristics of the Agua Negra tunnel?
- Two parallel tunnels, one for each way: moving down from Argentina to Chile and up from Chile to Argentina, 13.9 km long. The Argentine entry point is at 4085m of altitude, the Chilean point at 3620m, with an average slope for the tunnels of 3.37%.
- Both tunnels are separated by 40m to 50m
- Road width of 7.5m, maximum height 4.8m. The typical transversal section is about 70m2
- Forced ventilation system for emergencies. Vertical 535m pit on the argentine side, 4.5m diameter, and ventilation tunnel on the chilean side, 4.75km long and 36m2 of area.
Information extracted from the EBITAN webpage. More information can be found in the spanish page of ANDES, here, or at EBITAN (also in spanish).