Evaluating the effects of Public- Private Partnerships on Infrastructure Development: A Case Study of Katuba Tollgate

Abstract

This study evaluated the effects of Public–Private Partnerships (PPPs) on infrastructure development in Zambia, using the Katuba Tollgate as a case study to understand how the PPP model influences efficiency, service delivery, and project sustainability. Guided by the objectives of assessing efficiency, identifying implementation challenges, and proposing strategies for improved PPP performance, the study adopted a qualitative research design. Data were collected from 60 participants through semi-structured interviews and focus group discussions involving government officials, private concessionaire representatives, council authorities, transport operators, and community members, and were analysed using thematic analysis to identify patterns, meanings, and emerging themes. Findings revealed that the Katuba Tollgate PPP improved road maintenance, operational organisation, and revenue collection, yet efficiency remained inconsistent during peak hours due to limited staffing, lane management gaps, and occasional technical delays. Additional challenges included weak institutional capacity for monitoring, bureaucratic processes, and inadequate communication with road users. The study’s implications suggest that PPPs can enhance infrastructure delivery when supported by strong governance, transparent oversight, and effective coordination between stakeholders. It concludes that PPPs hold significant potential for improving Zambia’s road network but require strengthened institutional frameworks and more inclusive engagement to achieve full effectiveness. The study recommends capacity building for monitoring agencies, adoption of advanced tolling technologies, improved community sensitisation, performance-based contracting, and further research comparing multiple PPP toll projects and assessing long-term socio-economic impacts. Keywords: Public–Private Partnerships; Infrastructure Development; Efficiency; Implementation Challenges; Performance Strategies.