[This has been rewritten from 2025  and new sources have been added]

The transcontinental railway that connected both coasts in May 1869 meant you could travel between both coasts increasing both cargo and people movement on a scale never seen before.

It is hard to think of a time without cars and airplanes to travel long distances, but for a long time you were limited to just foot, horse, and sail making long distance travel long and even dangerous. The development of the steam engine changed that forever. Trains that could haul people and cargo over distances became practical; steam engines replaced sails with steamships. Rail lines connecting cities appeared allowing for quicker movement of cargo in Europe and the United States. The dream of connecting both coasts was born to avoid sailing through Cape Horn or walking across the Isthmus of Panama and was fulfilled on May 10, 1865.

In 1853, the U.S. Congress approved money for surveys for possible railroad routes. Delays due to where it should begin and of course the looming tensions between North and South delayed it. In 1862–with the Civil War underway–the Pacific Railroad Act was passed which provided loans and public land grants to build the railroad. A second one in 1864 was passed to increase the land grant sizes and allowed the railroads to sell bonds to raise capital. The Union Pacific began westward construction from Omaha, Nebraska and the Central Pacific began constructing eastward from Sacramento, California. Construction was arduous, difficult due to extremes of heat and cold, and often lived in miserable conditions. Chinese laborers who worked for the Central Pacific worked long hours for less pay than their counterparts at Union Pacific.

Construction of rails and tunnels in the Sierra Nevada mountains was difficult, and avalanches would take whole work crews. Dynamite had not been invented yet, so for blasting rock black powder or nitroglycerin was used. Nitroglycerin was not widely known, having been made into a blasting agent by Alfred Nobel in the early 1860’s. Used in its liquid form before dynamite was invented (also by Nobel), was extremely dangerous to handle, sometimes exploding due to mishandling or temperature changes.

In April 1866 70 crates of nitroglycerin exploded aboard a steamship bound for California, killing fifty people. Not long after that a nitroglycerin explosion occurred in San Francisco at the Wells Fargo office killing fifteen people. Railroad workers in the Sierra Nevada were killed transporting nitroglycerin. This resulted in a California law banning liquid nitroglycerin from being transported in the state and Central Pacific using black powder from that point on.

Despite the obstacles and even initially building lines that did not connect, the transcontinental railroad was finished, under budget, and ahead of schedule in 1869. By June 1869 it was entirely possible to travel by rail from Jersey City, New Jersey to the Alameda Wharf in Oakland, CA. There you would catch a railroad owned ferry to San Francisco. Why not go directly to San Francisco? You would have to head down to San Jose and then take a second train, the San Francisco & San Jose Railroad, which came into San Francisco adding additional hours to your trip. Freight cars were unloaded in Alameda, loaded onto special ferries to be transported across the bay to San Francisco. They then would be unloaded onto specially built railroad piers and hauled away by the local railroad that serviced the wharves.

The establishment of the transcontinental railroad made possible quick delivery of passengers, freight, and mail across the country. What used to take weeks or months of travel was now just a week at most. Timetables from that time showed a how long a journey would take:

New Jersey to Omaha: 2-3 days.
Omaha to Sacramento: 2-3 days.
Sacramento to Alameda: 1 day.

No longer the uncomfortable ride on a stagecoach or a long sea voyage. Now it was just at most a week between coasts resulting in a significant boost to the economy. New communities would form where the trains stopped. Immigrants from Europe would now easily move into the interior building homes resulting in new communities filling up the country. The transcontinental railroad united the country, spurred economic growth, and the settling of the country. The railroad remained an important component of travel until replaced by the auto and airplane.

Sources

“Building the Transcontinental Railroad.” Smithsonian Learning Lab. Accessed May 13, 2026. https://learninglab.si.edu/collections/building-the-transcontinental-railroad/n3uf1KkD3VuPYmdq.

Dwyer, Kassandre. “Get to Know the Architects & Builders of the Transcontinental Railroad | TheCollector.” TheCollector. Accessed May 13, 2026. https://www.thecollector.com/get-know-architects-builders-transcontinental-railroad/.

Graves, G. J. “Nitroglycerine!” Central Pacific Railroad Photographic History Museum. Accessed May 13, 2026. https://cprr.org/Museum/Newspapers/Nitroglycerine.html. Newspaper accounts of nitroglycerine explosions.

“Transcontinental Railroad Completed | May 10, 1869  | HISTORY.” HISTORY. Last modified May 28, 2025. Accessed May 13, 2026. https://www.history.com/this-day-in-history/may-10/transcontinental-railroad-completed.

“01. Black Powder & Nitroglycerin  – Linda Hall Library.” The Linda Hall Library. Last modified April 8, 2024. Accessed May 13, 2026. https://www.lindahall.org/experience/digital-exhibitions/the-transcontinental-railroad/01-black-powder-nitroglycerin/.

Shedd, Thomas Clark. “The Transcontinental Railroad.” Encyclopedia Britannica. Last modified May 4, 2026. Accessed May 13, 2026. https://www.britannica.com/technology/railroad/The-transcontinental-railroad.

There was a time that traveling coast to coast was an arduous task. You could take a long ship voyage down to the tip of South America (Cape Horn) and then sail north to get to San Francisco. You could get off at the Isthmus of Panama and walk over to the Pacific (and later by train) but it had its own risks as well. Or you could go as far west as the train would take you and take either a long wagon train voyage (or possibly a long stagecoach ride) until you got to the west coast. The completion of the transcontinental railway ended that on 10 May 1865 in Promontory, Utah.

The need for a transcontinental railroad was noticed as early as 1832. Connecting both coasts was needed in order to move freight, people, and even the military if needed. It was not until 1853 that the US Congress approved money for surveys to be done on possible routes. Tensions between North and South caused delays and where the line should begin. In 1862, with the Civil War going on, Congress approved the Pacific Railroad Act (1862) which gave loans and public land grants to build the railroad. The Union Pacific and Central Pacific rail lines began construction in Omaha and Sacramento.

Construction was arduous and difficult for both lines and the workers who built them. The Union Pacific used mostly Irish laborers, many who had served in the Civil War. Conditions in towns and settlements they had to use in most cases was simple and often miserable. Making it more difficult were the hot summers and often cold winters along with a great deal of lawlessness as well. The Central Pacific used Chinese laborers who worked brutal 12-hour days and were paid less than their counterparts on the Union Pacific. Building in the Sierra Nevada mountains proved very difficult, and avalanches were a frequent hazard in which whole work crews would be killed. Also misuse or mishandling of explosives would also take lives as well.

Yet despite all of this (and even initially building the lines that did not connect), the transcontinental railroad got done ahead of schedule in 1869. Remarkably it came in under budget, which is extraordinary for a massive project of this type. Its construction allowed for the rapid expansion and development of the United States thanks to the rapid movement of freight and people across the country. By the end of June 1869, it was possible to travel entirely by rail from Jersey City, New Jersey to the Alameda Wharf in Oakland, CA. From there you hopped on a railway owned ferry to take you across the bay to San Francisco.

Sources

Allen et al., “Railroad | History, Invention, & Facts,” Encyclopedia Britannica, last modified April 21, 2025, http://www.britannica.com/technology/railroad/The-transcontinental-railroad.

HISTORY.com Editors, “Transcontinental Railroad Completed, Unifying United States | May 10, 1869 | HISTORY,” HISTORY, last modified March 5, 2025, http://www.history.com/this-day-in-history/transcontinental-railroad-completed.

History Net Staff, “The Transcontinental Railroad: Facts and Information,” HistoryNet, April 24, 2023, http://www.historynet.com/transcontinental-railroad.

There was a time that traveling coast to coast was an arduous task. You could take a long ship voyage down to the tip of South America (Cape Horn) and then sail north to get to San Francisco. You could get off at the Isthmus of Panama and walk over to the Pacific (and later by train) but it had its own risks as well. Or you could go as far west as the train would take you and take either a long wagon train voyage (or possibly a long stagecoach ride) until you got to the west coast. The completion of the transcontinental railway ended that on 10 May 1865 in Promontory, Utah.

The need for a transcontinental railroad was noticed as early as 1832. Connecting both coasts was needed in order to move freight, people, and even the military if needed. It was not until 1853 that the US Congress approved money for surveys to be done on possible routes. Tensions between North and South caused delays and where the line should begin. In 1862, with the Civil War going on, Congress approved the Pacific Railroad Act (1862) which gave loans and public land grants to build the railroad. The Union Pacific and Central Pacific rail lines began construction in Omaha and Sacramento.

Construction was arduous and difficult for both lines and the workers who built them. The Union Pacific used mostly Irish laborers, many who had served in the Civil War. Conditions in towns and settlements they had to use in most cases was simple and often miserable. Making it more difficult were the hot summers and often cold winters along with a great deal of lawlessness as well. The Central Pacific used Chinese laborers who worked brutal 12-hour days and were paid less than their counterparts on the Union Pacific. Building in the Sierra Nevada mountains proved very difficult, and avalanches were a frequent hazard in which whole work crews would be killed. Also misuse or mishandling of explosives would also take lives as well.

Yet despite all of this (and even initially building the lines that did not connect), the transcontinental railroad got done ahead of schedule in 1869. Remarkably it came under budget, which is extraordinary for a massive project of this type. Its construction allowed for the rapid expansion and development of the United States thanks to the rapid movement of freight and people across the country. By the end of June 1869, it was possible to travel entirely by rail from Jersey City, New Jersey to the Alameda Wharf in Oakland, CA. From there you hopped on a railway owned ferry to take you across the bay to San Francisco.

Sources

“—.” Encyclopedia Britannica, 7 May 2024, www.britannica.com/technology/railroad/The-transcontinental-railroad.

—. “Transcontinental Railroad Completed, Unifying United States.” HISTORY, 9 May 2024, www.history.com/this-day-in-history/transcontinental-railroad-completed.

Staff, History Net. “The Transcontinental Railroad: Facts and Information.” HistoryNet, 24 Apr. 2023, www.historynet.com/transcontinental-railroad.

—. “Transcontinental Railroad.” Wikipedia, 29 Apr. 2024, en.wikipedia.org/wiki/Transcontinental_railroad.

There was a time that traveling coast to coast was an arduous task. You could take a long ship voyage down to the tip of South America (Cape Horn) and then sail north to get to San Francisco. You could get off at the Isthmus of Panama and walk over to the Pacific (and later by train) but it had its own risks as well. Or you could go as far west as the train would take you and take either a long wagon train voyage (or possibly a long stagecoach ride) until you got to the west coast. The completion of the transcontinental railway ended that on 10 May 1865 in Promontory, Utah.

The need for a transcontinental railroad was noticed as early as 1832. Connecting both coasts was needed in order to move freight, people, and even the military if needed. It was not until 1853 that the US Congress approved money for surveys to be done on possible routes. Tensions between North and South caused delays and where the line should begin. In 1862, with the Civil War going on, Congress approved the Pacific Railroad Act (1862) which gave loans and public land grants to build the railroad. The Union Pacific and Central Pacific rail lines began construction in Omaha and Sacramento.

Construction was arduous and difficult for both lines and the workers who built them. The Union Pacific used mostly Irish laborers, many who had served in the Civil War. Conditions in towns and settlements they had to use in most cases was simple and often miserable. Making it more difficult were the hot summers and often cold winters along with a great deal of lawlessness as well. The Central Pacific used Chinese laborers who worked brutal 12-hour days and were paid less than their counterparts on the Union Pacific. Building in the Sierra Nevada mountains proved very difficult, and avalanches were a frequent hazard in which whole work crews would be killed. Also misuse or mishandling of explosives would also take lives as well.

Yet despite all of this (and even initially building the lines that did not connect), the transcontinental railroad got done ahead of schedule in 1869. Remarkably it came under budget, which is extraordinary for a massive project of this type. Its construction allowed for the rapid expansion and development of the United States thanks to the rapid movement of freight and people across the country. By the end of June 1869, it was possible to travel entirely by rail from Jersey City, New Jersey to the Alameda Wharf in Oakland, CA. From there you hopped on a railway owned ferry to take you across the bay to San Francisco.

Sources

“—.” Encyclopedia Britannica, 7 May 2024, www.britannica.com/technology/railroad/The-transcontinental-railroad.

—. “Transcontinental Railroad Completed, Unifying United States.” HISTORY, 9 May 2024, www.history.com/this-day-in-history/transcontinental-railroad-completed.

Staff, History Net. “The Transcontinental Railroad: Facts and Information.” HistoryNet, 24 Apr. 2023, www.historynet.com/transcontinental-railroad.

—. “Transcontinental Railroad.” Wikipedia, 29 Apr. 2024, en.wikipedia.org/wiki/Transcontinental_railroad.

There was a time that traveling coast to coast was an arduous task. You could take a long ship voyage down to the tip of South America (Cape Horn) and then sail north to get to San Francisco. You could get off at the Isthmus of Panama and walk over to the Pacific (and later by train) but it had its own risks as well. Or you could go as far west as the train would take you and take either a long wagon train voyage (or possibly a long stagecoach ride) until you got to the west coast. The completion of the transcontinental railway ended that on 10 May 1865 in Promontory, Utah.

The need for a transcontinental railroad was noticed as early as 1832. Connecting both coasts was needed in order to move freight, people, and even the military if needed. It was not until 1853 that Congress approved money for surveys to be done on possible routes. Tensions between North and South caused delays and where the line should begin. In 1862, with the Civil War going on, Congress approved the Pacific Railroad Act (1862) which gave loans and public land grants to build the railroad. The Union Pacific and Central Pacific rail lines began construction in Omaha and Sacramento.

Construction was arduous and difficult for both lines and the workers who built them. The Union Pacific used mostly Irish laborers, many who had served in the Civil War. Conditions in towns and settlements they had to use in most cases was simple and often miserable. Making it more difficult were the hot summers and often cold winters along with a great deal of lawlessness as well. The Central Pacific used Chinese laborers who worked brutal 12-hour days and were paid less than their counterparts on the Union Pacific. Building in the Sierra Nevada mountains proved very difficult, and avalanches were a frequent hazard in which whole work crews would be killed. Also misuse or mishandling of explosives would also take lives as well.

Yet despite all of this (and even initially building the lines that did not connect), the transcontinental railroad got done ahead of schedule in 1869. Remarkably it came under budget, which is extraordinary for a massive project of this type. Its construction allowed for the rapid expansion and development of the United States thanks to the rapid movement of freight and people across the country. By the end of June 1869, it was possible to travel entirely by rail from Jersey City, New Jersey to the Alameda Wharf in Oakland, CA. From there you hopped on a railway owned ferry to take you across the bay to San Francisco.

Sources

• Transcontinental Railroad (Brittanica.com)
• Transcontinental Railroad Completed, Unifying United States (History.com)
• Transcontinental Railroad (HistoryNet.com)
• Transcontinental Railroad (Wikipedia)