This is a

list of megaprojects This is a list of megaprojects, which may be defined as: * Projects that cost more than US$1 billion and attract a large amount of public attention because of substantial impacts on communities, the natural and built environment, and budgets. ...

within the transport sector. Care should be taken in comparing the cost of projects from different times, even a few years apart due to

inflation In economics, inflation is an increase in the general price level of goods and services in an economy. When the general price level rises, each unit of currency buys fewer goods and services; consequently, inflation corresponds to a reduct ...

; comparing nominal costs without taking this into account can be highly misleading. According to the ''Oxford Handbook of Megaproject Management'' in 2017, "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".

Completed projects

Under construction

Proposed

Airport projects

Notes

References

{{DEFAULTSORT:List Of transport megaprojects

Megaprojects 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 a ...

* Infrastructure-related lists Megaprojects