The company is hiring banks to coordinate the operation and proceeds are expected to finance new projects, according to a report.
At the same time, the health minister said that it will study whether the current project for the US$427mn Sótero del Río hospital is feasible.
The project involves improving and operating a 30km road between the Chilean capital and the village and ski resort. Part of the works entail widening a section of the road and adding new bridges. Bids will be opened on June 26.
The contract involves the operation and expansion of El Tepual airport in Puerto Montt. The project has an estimated budget of US$35mn.
Nine businessmen convicted of forming part of a corruption schemed involving public works were sentenced with carrying out seven construction projects.
The country's anti-corruption watchdog will seek to determine how much money was diverted and who benefited from corruption under the previous government.
The contract is to upgrade 15.3km of rural roads in the Pesé district of Herrera province.
State governor Geraldo Alckmin has already announced his candidature for the presidency and is expected to resign his post soon.