1. California High-Speed Rail (California)
Estimated Cost: $68 billion
As we said before, high-speed rail is nothing new, but definitely necessary in the United States. This high-speed rail is expected to be done by 2030–by that, you can already confirm how big of a construction project it is. Its construction did start in 2015, so they are slowly, but surely on their way to completion. This project is known to have 24 stations and will have high-speed trains to help with the commute and make transportation faster and more efficient.
America might not be the leading country when it comes to construction projects, but the biggest construction projects in U.S. still deserve to be applauded.
