This document discusses infrastructure engineering and public-private partnerships (PPP). It begins by introducing infrastructure engineering and its meaning and scope. It then discusses the US infrastructure report card which grades different categories of infrastructure on a scale from A to F. Several categories received poor grades like aviation (D) and roads (D). The document also discusses PPP models as a way to fund public infrastructure projects. It defines PPP and provides examples of common PPP models used in India like annuity, toll, EPC, HAM, DB, DBFOT, BOO, BLOT and more. It emphasizes the need for dedicated right of way for busways in PPP projects.