|Sections of the line constructed in trench are represented with the same line style as the at-grade sections.
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* See also https://www.bnamericas.com/en/news/brazil-metro-cost-overruns-top-us9bn1
See also https://projects.worldbank.org/en/projects-operations/project-detail/P116170?lang=en, which is very close in exchange-rate dollars.