President Abraham Lincoln signed the Pacific Railway Act into law on 1 July 1862 during the Civil War. The transcontinental railroad, built by the Central and Union Pacific Railroads, linked at Promontory Summit in Utah in 1869. One week after the driving of the Golden Spike, the Mormon Church-owned Utah Central Rail Road Company began construction southward from Ogden, and a year later Utah Central organizers incorporated the Utah Southern Railroad. Brigham Young drove a symbolic spike on 1 May 1871, and the first train reached Lehi City on 27 September 1872. The Utah Southern transformed Lehi, which served for almost a year as the line's terminus. Teamsters and bullwackers carried goods to and from points south, along with timber and ores from the mines in American Fork Canyon and the Tintic District, and many local men found work in freighting and forwarding. Dozens of saloons, boarding houses, and shops appeared along State Street. From 1872-73, the American Fork Railroad operated a narrow-gauge branch feeder line on the Utah Southern grade between American Fork and Lehi. In 1881, the Utah Central, Utah Southern, and Utah Southern Extension railroads were consolidated into the Utah Central Railway. In 1889, the line became part of the Union Pacific's Oregon Short Line & Utah Northern Railway Company, in 1897 it was renamed the Oregon Short Line Railroad, in 1902 it became part of the Los Angeles & Salt Lake Railroad, and since 1921 it has remained part of the Union Pacific system.