Deborah Blake Utah History Encyclopedia, 1994 On 10 May 1869 from Promontory Summit northwest of Ogden, Utah, a single telegraphed word, “done,” signaled to the nation the completion of the first transcontinental railroad. Railroad crews of the Union Pacific, 8,000 to 10,000 Irish, German, and Italian immigrants, had pushed west from Omaha, Nebraska. At Promontory they met crews of the …