How much does Agua Negra Tunnel cost?
The proposed Agua Negra Binational Tunnel would carry a permanent road link beneath the Andes between San Juan Province in Argentina and Chile's Coquimbo Region. The current design comprises two parallel one-way bores about 13.8 km long, replacing the seasonal high-altitude pass with a lower crossing. The project remains in pre-execution with no physical construction recorded.
Published project estimate
$1.6 billion
Cost basis: 2026
Joe MerloCC BY-SA 4.0
Cost record
How the cost changed
Budgets, contracts and final costs may cover different stages. Each figure keeps its own year and source.
Project metrics
Key dimensions
- Total lengthIIRSA/COSIPLAN project portfolio
- 13.8 km