Performance indicators for Public Private Partnership in Infrastructure

The concept of performance measurement is very relevant in virtually all spheres of life. The concept has received much attention in terms of construction generally, but very few works have addressed the concept from the perspective of public-private partnership in infrastructure delivery. This study therefore developed a set of Performance Indicators (PIs) for infrastructure public-private partnerships in Nigeria. The study employed survey research design approach, extensive literature review was conducted and possible indicators were extracted. Semi-structured interview was then conducted on 12 professionals that have engaged in PPP projects in order to gather their own opinion on the items to be considered while measuring the success or failure of a PPP project. The outcome of the interview was then synchronized with what was obtained from literatures and then presented in the questionnaire that was administered. A 5-point likert scale was used. 87 questionnaires were administered to professionals with PPP experience and 53 were collected. Mean score, the Kruskal-Wallis test and Spearman rank correlation was used for analysis. The result showed that, there was no significant difference between the sample means of the four groups of respondents i.e. Consultants, Contractors, Government, and Concessionaires. It was also revealed that a high magnitude of correlation exists between all but 3 of the 15 indicators presented in the questionnaire. Also, 14 out of the fifteen indicators had weighted mean scores above 3.00 that was initially set as the cut-off. The top three indicators were Cost; Innovation, Learning and Development; and Sustainability. The study therefore concludes that a number of qualitative and quantitative indicators apart from the popular ‘iron triangle’ are suitable for measuring the performance of PPP projects.