This study focuses on evaluating process-control systems in Tanzanian infrastructure projects to reduce project risks through a methodological assessment. A mixed-method approach combining quantitative (panel data analysis) with qualitative insights was employed to assess the impact of process-control systems on project outcomes in Tanzania. Panel data analysis revealed a significant positive correlation between the adoption of robust process-control systems and reduced risk levels, indicating an improvement in project performance by up to 20%. The findings suggest that enhanced process-control systems can significantly mitigate risks in Tanzanian infrastructure projects, contributing to more successful and cost-effective development efforts. Infrastructure managers are advised to implement comprehensive process-control systems as a key strategy for risk reduction and project success. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.