page_title: Megaproject
hierarchical_section_title: Megaproject
caption_attribution_description: Русский: Иллюстрация из энциклопедического словаря Брокгауза и Ефрона (1890—1907) English: Illustration from Brockhaus and Efron Encyclopedic Dictionary (1890—1907)
context_page_description: A megaproject is an extremely large-scale investment project.
  According to the Oxford Handbook of Megaproject Management, "Megaprojects are large-scale, complex ventures that typically cost $1 billion or more, take many years to develop and build, involve multiple public and private stakeholders, are transformational, and impact millions of people". However, $1 billion is not a constraint in defining megaprojects; in some contexts a relative approach is needed, such as in developing countries, where a much smaller project could constitute a megaproject. Therefore, a more general definition is "Megaprojects are temporary endeavours characterized by: large investment commitment, vast complexity, and long-lasting impact on the economy, the environment, and society".
  Bent Flyvbjerg, a professor at the Saïd Business School of the University of Oxford says that globally, megaprojects make up 8 percent of total global GDP.
context_section_description: A megaproject is an extremely large-scale investment project. 
  According to the Oxford Handbook of Megaproject Management, "Megaprojects are large-scale, complex ventures that typically cost $1 billion or more, take many years to develop and build, involve multiple public and private stakeholders, are transformational, and impact millions of people". However, $1 billion is not a constraint in defining megaprojects; in some contexts a relative approach is needed, such as in developing countries, where a much smaller project (such as one with a $100 million budget) could constitute a megaproject. Therefore, a more general definition is "Megaprojects are temporary endeavours (i.e. projects) characterized by: large investment commitment, vast complexity (especially in organizational terms), and long-lasting impact on the economy, the environment, and society".
  Bent Flyvbjerg, a professor at the Saïd Business School of the University of Oxford says that globally, megaprojects make up 8 percent of total global GDP. Megaprojects refer not only to construction projects but also decommissioning projects, which are projects that can reach multi-billion budgets, and have a high level of innovation and complexity, and are affected by a number of techno-socio-economic and organizational challenges.
caption: The Trans-Siberian Railway and other railways in the Asiatic part of the Russian Empire in 1900—an important 19th-century megaproject
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