List of transport megaprojects
This is a list of megaprojects within the transport sector. Take care in comparing the cost of projects from different times—even a few years apart—due to inflation; comparing nominal costs without taking this into account can be highly misleading. Note that inflation-calculated values are current.
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."
Under construction
| Project | Description | Country | Location | Approximate cost | Start of construction | Planned year of completion | Image | Notes | ||||||
| West Gate Tunnel | Tunnel (road) |  AustraliaTo USD|10.2|AUS|year=2022|r=1Airport projects
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