Construction projects frequently encounter delays arising from unforeseen circumstances such as design modifications, engineering failures, material shortages, and supply chain disruptions. Effective management of such delays is essential in large-scale infrastructure projects to maintain schedule performance and control project costs.

This paper presents a case study on the management of Extension of Time (EoT) claims in the Vashi Truck Terminal project located in Navi Mumbai, India. The project represents a significant public infrastructure initiative aimed at improving logistics and freight operations in the region. Due to the involvement of multiple stakeholders and the technical complexity of the project, several delay events occurred during execution.

The project commenced on 19 December 2020 with an original completion date of 15 March 2024. The project experienced significant delays due to multiple factors, including failures in the initial piling system, structural redesign, changes in building configuration, and supply chain constraints affecting construction materials. These issues necessitated re-engineering works, including re-excavation and re-piling, along with revisions to the structural and mechanical systems.

As a result, the contractor submitted Extension of Time claims to address the schedule impacts caused by these delay events. Following detailed delay analysis and evaluation of the associated technical and contractual factors, the project completion date was revised to 30 December 2025.

This study examines the causes of delay, the process of EoT claim assessment, and the financial implications associated with project prolongation. The findings highlight the importance of systematic delay analysis, effective contract administration, and proactive project management in mitigating the impact of unforeseen technical challenges in complex infrastructure projects.