The Construction Management of High Voltage Transmission Lines

Abstract

This study examines the construction management performance of three high-voltage (HV) transmission line projects in Ethiopia—Azezo-Chilga, Fincha II-Shambu, and Metu-Masha 230 kV lines—which are vital for strengthening grid reliability and supporting national electrification goals. Managing these projects presents significant challenges due to complex technical requirements, difficult terrain, logistical constraints, and extensive coordination needs across civil, electrical, and administrative teams. The research aims to evaluate construction management practices, identify the most pressing challenges, and propose evidence-based strategies to improve project efficiency, quality, and safety. A descriptive and exploratory research design was used. Data were collected from 18 key informants (project managers, engineers, site supervisors) and 42 project documents, including contracts, design drawings, test reports, and progress records. The analysis focused on three core dimensions—planning and survey, material and quality management, and execution and commissioning. The findings reveal that planning and survey effectiveness averaged 82%, supported by accurate route selection and reduced rework. Material and quality management performance averaged 76%, though procurement delays and logistics constraints affected tower delivery and conductor stringing schedules. Execution and commissioning achieved 84% performance, driven by strong supervision, safety compliance, and coordinated team workflows. Key challenges included logistical delays (reported in 67% of sites), terrain-related access problems (52%), and coordination gaps among stakeholders (48%). These were mitigated through proactive planning, improved contractor–client communication, and adaptive risk management strategies. Overall, the study concludes that integrated and data-driven construction management significantly improves schedule adherence, cost efficiency, and technical quality in HV transmission line projects. The findings offer practical guidance for policymakers, engineers, and project managers seeking to enhance performance, reliability, and long-term sustainability in Ethiopia’s power transmission infrastructure