Trains That Fly Above City Streets

Elevated railways solve the impossible math of city traffic by lifting entire train lines into the sky. Instead of blocking dozens of intersections at once, these tracks hover on bridges to let urban life flow underneath.

Cities often become gridlocked when ground-level trains force cars to stop at constant crossing gates. By building tracks on steel viaducts, engineers created a clever way to keep public transit moving without interrupting street traffic. You can still see these tracks looming over sidewalks in many major cities today. This design allows for rapid, continuous movement in dense areas where building tunnels would be far too expensive or complex.