Mumbai-Ahmedabad bullet train update: Over 20,000 steel masts to support corridor Share January 17, 2025 minutespedia.in Topstory The Mumbai-Ahmedabad Bullet Train Corridor is set to feature over 20,000 steel masts, ranging in height from 9.5 to 14.5 meters, to support its state-of-the-art 2×25 kV Overhead Traction System.