Megaprojects. A special eye on sustainability to overcome the Iron Law

Over the last century, megaprojects have proven to result unsuccess- fully in addressing the expected outcomes. When it comes to respecting budget and schedule constraints, megaprojects are affected by several variables and behav- iors, which affect the performances. Benefit shortfalls are another perspective of underperformance, given the impact that these endeavors have on communities and groups of interest. From literature review and empirical contributions, it is possi- ble to map and describe some managerial guidelines aimed at improving megapro- jects’ performances. In particular, it is interesting to look at these guidelines through the lenses of sustainability, by considering how managerial approaches should be applied and executed considering the concepts of social, environmental and economic sustainability.