Peruvian cement producer Cementos Yura battled rising costs, sluggish demand and an FX loss in the fourth quarter, as the government cut public spending on infrastructure projects.
Prosecutors are investigating alleged irregularities in the Ruta del Sol 2 highway contract.
San Juan inks deal with Kuwait Fund for Arab Economic Development as authorities prepare to start construction of the US$200mn project around the middle of the year following a tendering process.
Government expects to attract US$40bn in investment.
Some US$30mn was spent on the 12km, four-lane segment of the highway between Montería and Sincelejo.
The environmental impact assessment for the project to build the Viaducto La Raza-Indios Verdes-Santa Clara overpass was rejected by the country's environment ministry, temporarily halting progress.
Pampa acquired controlling stakes in each during 2016.