Abstract

"background": "Municipal infrastructure asset management (IAM) systems in many developing nations are often characterised by ad-hoc practices and a lack of systematic performance evaluation. There is a critical gap in applying rigorous experimental designs to measure the causal impact of IAM interventions on operational efficiency within this context. ", "purpose and objectives": "This study aims to quantify the efficiency gains achieved through the implementation of a structured IAM framework for road and drainage assets. The primary objective is to measure the causal effect on key performance indicators using a quasi-experimental design. ", "methodology": "A longitudinal, difference-in-differences (DiD) design was employed, comparing treatment municipalities implementing a standardised IAM system with matched control municipalities maintaining business-as-usual practices. Efficiency was modelled using a fixed-effects panel regression: Y{it = \0 + \1 (\) + \ + \ +, where robust standard errors were clustered at the municipal level. ", "findings": "The intervention generated a statistically significant 18. 2% improvement in planned maintenance expenditure as a proportion of total maintenance spend (95% CI: 12. 5% to 23. 9%). A key theme from supplementary analysis was that institutional capacity, rather than initial asset condition, moderated this effect. ", "conclusion": "The structured IAM framework demonstrably enhances the efficiency of municipal infrastructure management by shifting expenditure from reactive to planned activities. The causal evidence confirms the value of systematic asset management in a resource-constrained setting. ", "recommendations": "National policy should mandate the adoption of standardised IAM systems for municipalities, supported by targeted capacity-building programmes. Future system design must explicitly address institutional strengthening to maximise efficiency gains. ", "key words": "asset management, infrastructure, quasi-experimental, difference-in-differences, municipal engineering, efficiency", "contribution statement": "This paper provides the first application of a

Key Points