Construction works on Panama Metro Line 3 50 per cent complete March 20, 2024 | Latin America News, News Civil construction works on Panama Metro Line 3 are 50 per cent complete. Line 3 will span 25 km, connecting Albrook to Ciudad del Futuro, with a 6-km-long tunnel section under the Panama Canal. The c... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password