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Both branches cross a region where mining activity is expanding. Improving them could support exports from Salta and Jujuy, but the results will depend on investment, operational capacity and the involvement of private operators.
The government plans to engage mining companies and logistics operators in discussions on upgrading the C14 railway, which connects Salta province with northern Chile through the Socompa border crossing. It is also seeking private investment to bring the C15 branch into operation, strengthening freight connections with Bolivia and onward to international markets.
The wider C rail network runs through Salta and Jujuy, two provinces with significant mining activity. It connects the region with Chilean ports and with Argentina’s main export gateways.
The initiative comes as Argentina moves forward with plans to privatise its Belgrano, San Martín and Urquiza freight railway lines, currently operated by state-owned Belgrano Cargas y Logística.
The Belgrano network covers nearly 7,600 km, but only around 4,015 km are operational. Bringing more of the network back into service could help ease transport bottlenecks and strengthen the link between northwestern mining regions and export markets.
According to the World Bank, expanding lithium production in northwestern Argentina depends in part on modernising the C14 branch, restoring operations across its stations and reaching freight capacity of at least 400,000 tonnes per year.
A mining project requires more than a mineral resource. It also needs dependable transport, access to ports, power, water and clear export procedures. Where these systems are limited, project feasibility and investment decisions can be affected.
Braian Gao, CEO of Latam Bridge Capital, told BNamericas that investors tend to favour projects with a clearer path to development and established mining logistics.
This gives the rail initiative a wider significance. Better freight connections could help projects move forward, improve access to export markets and make the northwest more attractive to investors. Rail may also offer a more efficient option than long-distance road haulage for regular, high-volume cargo.
The benefit should not be overstated. Rehabilitated tracks do not automatically mean reliable freight services. Rolling stock, maintenance, border procedures, port capacity and coordination between operators will all influence whether the network performs as expected.
The rail plans form part of a broader infrastructure effort in Salta. In July, the World Bank approved US$100 million for a project focused on regional economic development, job creation, connectivity and mining management.
The programme includes rehabilitating 24 km of National Route 51, upgrading the General Güemes Logistics Hub and Industrial Park, improving its connection to the Belgrano railway, and developing water and wastewater treatment infrastructure in Olacapato and San Antonio de los Cobres.
Together, these measures aim to strengthen the infrastructure needed to support economic activity and the responsible development of critical minerals in the province.
The next test will be whether the government’s plans attract firm commitments from mining companies and logistics operators. Industry observers will be watching for investment decisions on the C14 and C15 branches, progress on the privatisation of the Belgrano network and evidence that freight capacity is increasing.
The pace of mining development in the northwest will also matter. As lithium and copper projects advance, demand for regular, high-capacity transport is likely to grow, increasing the value of a functioning rail link to Chile and Bolivia.
Argentina’s lithium and copper growth will depend on more than mineral resources and new projects. Reliable transport infrastructure will be essential to moving production efficiently, connecting mining regions with ports and supporting exports.
The rehabilitation of the C14 and C15 branches does not solve every logistics challenge facing the sector. Its importance is practical. If the plans attract private investment and deliver higher freight capacity, they could make the northwest’s mining supply chain more efficient, more predictable and better placed to serve international markets.
