The top 50 projects 
in North America

Your guide to the continent’s most ambitious megaprojects

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Top 50 Projects in NA eBook cover

North America is experiencing an infrastructure boom

Ambitious projects are reshaping our cities, transportation networks, energy systems, and environmental landscape.

This report introduces the 50 most significant construction and engineering initiatives currently underway across the United States and Canada.

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What's inside

Top 10 Projects

1. Ontario Line

Project overview
With a budget of $27.2 billion, the Ontario Line is a 15.6-kilometer standalone rapid transit line that will run through downtown Toronto.

2. The Hudson Tunnel Project

Project overview
Described as "the most urgent infrastructure program in America," this project is building a two-track rail tunnel under the Hudson River.

3. Site C Clean Energy Project

Project overview
This dam and hydroelectric generating station in northeastern British Columbia will power 450,000 homes on completion.

4. Metrolinx GO Expansion

Project overview
This rail project in Ontario, Canada, aims to provide two-way, all-day service every 15 minutes or better on core lines.

5. TSMC Arizona Semiconductor Complex

Project overview
Taiwan Semiconductor Manufacturing Company is investing $65 billion to build three semiconductor fabrication
plants near Phoenix, Arizona.

6. SunZia Wind and Transmission

Project overview
This $20 billion project in New Mexico comprises a 3.5 GW onshore wind farm and a 550-mile transmission line.

7. Los Angeles Purple Line Extension

Project overview
This metro project in Los Angeles adds nine miles of rail and seven stations to connect downtown LA with the Westside.

8. Eglinton Crosstown LRT

Project overview
Eglinton Crosstown Light Rail Transit is a 19.7 kilometer light rail project in Toronto, Canada that is expected to complete in 2025.

9. Sound Transit 3

Project overview
With a budget of $50 billion, Sound Transit 3 is a major project planned for the greater Seattle metropolitan area.

10. Louis-Hippolyte-La Fontaine Tunnel Rehabilitation

Project overview
This is the longest underwater
tunnel in Canada, connecting Montreal to Longueuil across the St. Lawrence River.

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