Ladder track is a type of railway track design in which the rails are supported by transverse sleepers (or ties) that are closely spaced and run perpendicular to the rails, resembling the rungs of a ladder. This configuration is typically used in specific engineering applications such as in tunnels, bridges, or other structures where vibration damping, durability, or ease of maintenance is a priority.
The track structure may be constructed using prestressed concrete or steel components, and the continuous support provided by the closely spaced sleepers helps distribute loads more evenly across the supporting structure. Ladder tracks are often enclosed within a concrete or ballastless trackbed, contributing to reduced maintenance needs compared to traditional ballasted track systems.
This type of track is commonly found in urban transit systems, such as subways and elevated railways, where noise and vibration control are critical. It is also used in some high-speed rail applications and industrial settings. The design allows for better alignment stability and resistance to lateral forces, making it suitable for environments with high dynamic loads.
Ladder track systems require precise manufacturing and installation but offer long-term benefits in terms of track geometry retention and service life.