Labor, geography, climate were the main problems. Much of the railroad had to be built in inhospitable climates with little or no infrastructure to support the massive worker populations.
This led to high mortality rates.
Utah
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The Union Pacific began building the Transcontinental Railroad in Omaha, Nebraska. From there, the construction headed westward toward California, traversing the plains and mountains. This expansion was part of a larger effort to connect the eastern and western United States by rail.
Sacrament and Utah
The western starting point for the first transcontinental rail road was at Sacramento, California.
Transcontinental Railroad
devin matthew murray
a rail road that went from one end of america to another
the invention of refrigerated rail cars.
Another name for the transcontinental railroad is the Pacific Railroad. This term often refers to the First Transcontinental Railroad in the United States, which connected the eastern rail network with the Pacific coast, facilitating westward expansion and commerce.
If you are asking about the US, then it ended at the Pacific ocean or in the Gulf of Mexico.
Union Pacific Railroad