How America Built a $25B City in Midair Because Manhattan Ran Out of Ground

Hudson Yards stands on about 300 caissons drilled between 30 live tracks feeding Penn Station. Barely a third of the site could carry anything. At the throat, no column fits, so a skyscraper rides on a bridge. The rail yard never closed. Half of it is still open sky. #construction #documentary #architecture #nyc #engineering #newyork #civilengineering #skyscraper DISCLAIMER ____________________________________ This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes.