Mega Projects
Railway Mega Projects
Landmark rail infrastructure. Follow the world's most ambitious railway projects: high-speed lines, mega tunnels, and transformative infrastructure.
Browse all mega projectsFeatured Projects
Brightline West
America's first true high-speed rail: Las Vegas to greater Los Angeles at 200 mph
Las Vegas → Rancho Cucamonga350.8 km
Under Construction
Fehmarnbelt Fixed Link
World's longest combined road-rail immersed tube tunnel, threading the missing link of the Scan-Med corridor.
Puttgarden → Rødby18 km
Under Construction
All Projects
Brightline West
America's first true high-speed rail: Las Vegas to greater Los Angeles at 200 mph
Las Vegas → Rancho Cucamonga350.8 km
Under Construction
Fehmarnbelt Fixed Link
World's longest combined road-rail immersed tube tunnel, threading the missing link of the Scan-Med corridor.
Puttgarden → Rødby18 km
Under Construction
Gotthard Base Tunnel
The world's longest railway tunnel, slicing 57 km flat through the Swiss Alps.
Erstfeld → Bodio57.09 km
Operational
HS2
Britain's most ambitious post-war railway, halved in scope and being rebuilt under a 2026 programme reset.
London → Birmingham225 km
Under Construction