Why Are Stones Laid Between Train Tracks?

BY SANDHYA | 5 AUG 2025

Introduction

Ever noticed the sharp stones between railway tracks? These are not random! They're called track ballast and serve vital purposes.

What is Track Ballast?

Track ballast refers to crushed stones placed between and around railway tracks to support and stabilize the track.

 Maintains Track Position

Ballast holds railway sleepers (ties) firmly in place, preventing the tracks from shifting due to train movement.

Distributes Load Evenly

It spreads the weight of passing trains over a wider area, reducing stress on the ground beneath.

Water Drainage

Ballast allows for easy water drainage, preventing water from collecting and damaging the track foundation.

Controls Vegetation Growth

The rocks suppress the growth of weeds and plants, which could otherwise damage or weaken the tracks.

Dampens Vibrations

Stones absorb and reduce vibrations caused by trains, minimizing wear and tear on tracks and sleepers.

Prevents Erosion

By keeping the track bed stable, ballast helps prevent soil erosion during rains and floods.

Easy Maintenance

Loose stones can be easily replaced or adjusted during maintenance without disassembling the track.

Long-Term Durability

Ballast significantly increases the lifespan of railway tracks by reducing movement and wear.