ACS explained that the idea still has not yet been discussed by its board. Italy's In late May Atlantia offered US$18bn to acquire its Spanish competitor Abertis.
Ferreycorp cut costs and pre-paid bonds to reduce its financial expenses, as an economic slowdown eroded first half sales.
The projects would entail a total estimated investment of some 40bn pesos (US$2.3bn).
The plan of works is focused on General San Martín department in Córdoba province and includes road infrastructure, health and education, among others.
The company was supposed to return control of the Ruta del Sol II highway to authorities last week, but it has yet to deliver the information about its debts to suppliers.
Slumping steel prices made for another disappointing quarter for Peruvian Aceros Arequipa, as higher export and local shipments failed to offset weak markets.
Energy initiatives feature among the project proposals.