List of world's most expensive transport infrastructure

This is a list of transport megaprojects. Care should be taken 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.

The size and scope of projects varies considerably; some projects are made up of a package of different infrastructure projects, while others may be single part of a larger network.

In order to limit the size and scope of this list, recent infrastructure that cost less than $1 billion is not listed; this is a common definition of a megaproject. However, historically significant projects may be listed. See also list of megaprojects.

(under construction)

(under construction)

(under construction)

(under construction)

(under construction)

(under construction)

(under construction)

(under construction, partially completed)

(under construction)

Stage 3- 2023 (expected)

2.6 billion (Phase 2)

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