The Brazilian company plans to sell shares of its heavy assets division.
The 11 projects will be funded via a trust fund that was set up under a program to extend the Veracruz-Cardel highway concession.
Last year's investments rose to four times the public works ministry's historical average, to be superseded yet again in 2018.
The operator claims that current capacity doesn't warrant investments in expansion.
Most resources will flow to maintenance works.
The initiative involves the widening of a stretch between the Bridge of the Americas and Arraiján.
The funds have been greenlighted by Brazil's transport ministry.
Ecorodovias will buy the remaining 42% stake of the highway concessionaire.