In the United States, the majority of mainline railroad track weights at least 130 pounds per yard, or 43.33 pounds per foot. The weight of railroad track ranges from 75 to 175 pounds per yard (25 to 25 pounds per foot) (58.33 pounds per foot).
In the 1800s, most railroad track weighed approximately 80 pounds per yard, but as trains became heavier, track had to get heavier. For light trains, such as subways, less than 100 pounds per yard (33.33 pounds per foot) of track is utilised. In the United States, the majority of railroad track weighs between 112 and 140 pounds per yard, and track weight is commonly measured by the yard.