The 10 Most Expensive Engineering Projects Ever Attempted

THE 10 MOST EXPENSIVE ENGINEERING PROJECTS EVER ATTEMPTED 3 4 6. 10 Lufthase sb/ SB CIVIL ENGINEERING SMART GROUNDWORK SOLUTIONS 1. U.S. Interstate freeway system: $459br 2. International Space Station: $150bn 3. King Abdullah's economic city: $95bn 4. California High Speed Train: $98.5bn 5. Dubailand: $76bn 6. Songdo Int'l Business District: $40bn 7. Kansai International Airport: $29bn 8. Hong Kong International Airport: $27bi 9. Beijing-Shanghai Railway: $26.1bn 10. Airbus A380: $23bn