This document outlines the key components and objectives of a feasibility study for public-private partnership road and highway projects. It recommends that a "full" feasibility study be conducted for most PPP projects to identify and allocate risks, provide sufficient information for government and private partners, and minimize transaction costs. The key sections of a full PPP feasibility study include: a technical evaluation including demand forecasts and preliminary design; a socio-economic cost-benefit analysis; a financial analysis including financial modeling and identification of needed fiscal support; and a risk assessment and allocation. The feasibility study should culminate in a "PPP Business Case" that defines the project requirements and evaluates delivery options to identify the preferred public-private partnership structure.