Transcontinental Railroad Completed
The golden spike was driven at Promontory Summit, completing the first US transcontinental railroad
May 10, 1869
Driving the Golden Spike
On May 10, 1869, at Promontory Summit in the Utah Territory, the tracks of two railroad companies met and were joined with a ceremonial golden spike, completing the first transcontinental railroad in the United States. The Central Pacific had built eastward from Sacramento, California, while the Union Pacific had built westward from Omaha, Nebraska. The two tracks, stretching nearly 2,000 miles, were joined with a telegraph message that sent celebration across the nation. For the first time, a journey from the East Coast to the West Coast that had previously taken months could be completed in about a week. The United States had been stitched together from sea to sea.
Built by Immigrant Labor
The transcontinental railroad was built largely by immigrant workers. The Central Pacific employed tens of thousands of Chinese immigrants, many of whom had come to California during the Gold Rush. They did the most dangerous work, including blasting tunnels through the Sierra Nevada mountains with nitroglycerin. They were paid less than white workers and lived in worse conditions. The Union Pacific relied heavily on Irish immigrants and Civil War veterans. Both groups faced harsh conditions — brutal cold in the mountains, scorching heat in the desert, and constant danger from explosives, rockfalls, and attacks by Native American tribes who understood that the railroad meant the end of their way of life.
Transforming a Nation
The transcontinental railroad transformed the United States in profound ways. It opened the vast interior of the continent to settlement and commercial farming, accelerating the displacement and destruction of Native American peoples and their cultures. It made the transport of goods and people across the country dramatically faster and cheaper, fueling industrialization and economic growth. Cities like San Francisco, Denver, and Omaha boomed. The railroad made a national market possible for the first time, allowing goods made in factories in the East to be sold across the continent. It was one of the greatest infrastructure projects in American history and a defining moment in the country's transformation into an industrial power.