Yes, this is correct because of course the pension plans and other investors in the infrastructure bank will demand returns on their investment of 10% - 15%.  You can rest assured that they will realize those returns, whether it be through the tolls/fees as you mentioned, or driving down the cost of construction labour (use of TFWs or recent immigrants).  While in theory more infrastructure is a undoubtedly a good thing, a program of this sort administered by a political party (particularly one so inexperienced as this one) is fraught with risk.  I'm extremely skeptical of this.