Also Within this year in history

May

10

19th Century

Transcontinental railroad completed, unifying United States

On May 10, 1869, the presidents of the Union Pacific and Central Pacific railroads meet in Promontory, Utah, and drive a ceremonial last spike into a rail line that connects their railroads. This made transcontinental railroad travel possible for the first time in U.S. history. No longer would western-bound travelers need to take the long and dangerous journey by wagon train.

Transcontinental Railroad

Completion of the first transcontinental railroad with the Central Pacific Railroad coming from Sacramento, and the Union Pacific Railroad building out from Chicago, Promontory Point, Utah, May 10, 1869. The two railroads started the project six years earlier, in 1863. (Photo by Underwood Archives/Getty Images)

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