The 10 most expensive infrastructure projects in the US

Most expensive infrastructure projects | Courtesy of Texas Central Railway

Port of New Orleans | PAUL J. RICHARDS/Getty Images

Port of New Orleans

The Port of New Orleans officials hope to deepen the channel by 5 feet, to 50 feet, to allow larger ships.

  • Cost: $1.2 billion
  • Status: In procurement

Gordie Howe International Bridge

This additional bridge is intended to improve traffic flow between Detroit and Windsor, Ontario.

  • Cost: $2.1 billion
  • Status: Seeking proposals for design

Puget Sound Gateway Project | Courtesy of Washington State Department of Transportation

Puget Sound Gateway Project

Washington state's project will expand highways to relieve traffic and congestion between Seattle and Tacoma.

  • Cost: $2.8 billion
  • Status: In planning stages

I-70 Mountain Corridor

The I-70 Mountain Corridor will be a 144-mile route through Colorado's mountains, on the existing I-70 highway. Its goals are to improve accessibility and mobility and decrease congestion along the corridor.

  • Cost: $3.5 billion
  • Status: In planning stages

Jasper Ocean Terminal

The new terminal will provide large container ships with access to the Port of Savannah in Georgia.

  • Cost: $4.5 billion
  • Status: In planning stages

Gateway Program

The Gateway Program is an expansion and renovation of an old passenger rail line between Newark, New Jersey and New York City.

  • Cost: $7.5 billion
  • Status: In planning stages

New York City bus terminal | Anadolu Agency/Getty Images

New York City bus terminal

The planned structural changes will "improve customer experience" and "modernize the terminal," according to the Port Authority of New York and New Jersey.

  • Cost: $8 billion
  • Status: In planning stages

Texas Central Railway

This will be a passenger rail line connecting Dallas and Houston and helping the 50,000 people who commute between the cities weekly.

  • Cost: $10 billion
  • Status: In conceptual stages

Bay Delta Conservation Plan

The Bay Delta Conservation Plan would create two tunnels, as deep as 150 feet below ground, to carry water from Northern California to Southern California.

  • Cost: $25 billion
  • Status: In planning stages

California high-speed rail

The project will create a line, carrying passengers from San Francisco to Los Angeles in less than three hours.

  • Cost: $68 billion
  • Status: Under construction

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