This study examined the factors influencing the successful implementation of national road projects in the Fourth District of Laguna, Philippines, to support the development of a targeted action plan. The research aimed to evaluate the effectiveness of current strategies in managing construction design changes, project cost control, and scheduling. Data were gathered through structured surveys completed by stakeholders involved in road project implementation. Respondents rated the effectiveness of strategies with mean scores of 4.353 for construction design changes, 4.200 for cost control, and 4.280 for scheduling, indicating generally effective implementation. However, only 39.39% of respondents considered strategies for design changes and cost control highly influential, and just 33.33% did so for scheduling, pointing to areas for improvement. Additional challenges cited included communication gaps, coordination issues, and varying levels of expertise among project team members. These findings underscore the need for continuous improvement in planning, enhanced stakeholder collaboration, and targeted capacity building. Based on these results, a proposed action plan has been formulated to address the identified gaps, improve project execution, and ensure more efficient and sustainable implementation of future national road projects.

Keywords: national road projects, construction design, project cost control, project team, Laguna 4 th District