Conceptual Framework of Mega Construction Project’s Complexity: An Investigative Review

Megaprojects are available as huge, long-lasting projects that involve many participants from different sectors (private and governmental). It’s characterized by their impact on the economy and environment of the countries of construction. This study provides a tabulation of the characteristics and factors that increase megaprojects’ complexity. This study analyzes previous studies concerned with diagnosing complexities in large projects, indicating the ways in which these complexities are evaluated to provide a table in which the most important complexities appear. Based on the list of complexities, a suitable framework will be presented to make it easy for decision-makers to manage complexity during the project life cycle. As far as the findings of the investigative review are concerned, it can be said that the most urgent concern is the application of a complex framework in designing the megaproject strategies and monitoring the project management practices by the model of conceptual frameworks. In this context, this review has drawn a multi-dimensional picture of complexity and tackled how to get around these challenges. This contribution is much needed in the era of global competition in which megaprojects are finally more a rule rather than an exception. It is concluded that qualitative analysis, Delphi study, and causal map methodology are the most effective tools for identifying significant complexity for effective farmwork.