Why railway tracks are thicker?
The wooden or concrete railway sleeper (or railroad tie) is used as the base for the railway track to keep the tracks intact in its place In other words, wooden sleepers hold the rails to the correct gauge. Additionally, they absorb and distribute the weight of the train uniformly. swampesterswithin.blogspot.com
When you look at a stretch of railway track, you will notice spaces in between the metal tracks. The reason for this is that metal will expand when it grows warmer, and will shrink when it grows colder. These gaps allow for the metal to expand, so that when it is an extremely hot day, the railway tracks won't bend all out of shape causing trains to derail.
The Pacific Railway Act of 1862. With the southern states absent, no discussions were required as to why New Orleans would not be the hub of the transcontinental railway. The problem was that the Pacific Railroad could not afford to build the railway. To make the railway possible the US government and the Lincoln administration subsidized the railroad company with public land grants.