Effectiveness of Risk Management Strategies on Project Outcomes: A Mixed-Methods Study of Contract Package 101 of the Metro Manila Subway Project

The Metro Manila Subway Project (MMSP) represents a critical advancement in the Philippines' infrastructure, addressing urban congestion and improving public transportation. However, the complexities of large-scale projects like the MMSP introduce a range of risks that can impact project timelines, costs, and overall success. This study evaluates the effectiveness of Risk Management Strategies (RMS) implemented in Contract Package 101 (CP101) of the MMSP. The research identifies key risks encountered during execution, evaluates stakeholder perceptions of current mitigation controls, and analyzes on-site execution challenges. Using a mixed-methods approach, data were collected through document analysis of project reports and risk registers, semi-structured expert interviews with a site manager, and structured surveys administered to 31 site engineers and regulatory personnel. Statistical analysis, including weighted means, thematic coding, and Pearson correlation coefficients, was used to rank risk profiles and assess the significance of RMS effectiveness for project outcomes. The findings aim to provide actionable insights to optimize risk management frameworks and improve execution practices in large-scale infrastructure projects.