A large-scale construction or infrastructure project is very complex and has highly dynamic and interdependent risks and uncertainties over its long-term project life. This leads to the increasing challenges for an accurate project investment analysis and a right contractor selection. An Investment and Contractor Selection Decision Support System: Private-Public Partnerships Infrastructure Project Procurement provides the framework and methods of risk assessment and decision analysis designed to overcome the challenges. It covers the following features: 1. It highlights the debates of public-private partnerships infrastructure project procurement; 2. It addresses the critical issues of cost and benefit analysis; 3. It provides a modeling and simulation approach and statistical analysis to evaluating the effect of risk interdependencies; 4. It provides a method to project investment analysis integrating non-financial with financial evaluations; 5. It provides a stochastic analysis-based decision-making approach for project contractor performance comparison and selection; 6. It provides a risk and resource allocation method for project contract design.