The Utah Southern Railroad was built by the Mormons in 1871-2 to connect Salt Lake City to points south. The line was acquired by the Union Pacific Railroad (UP) in 1875. The Utah Southern Railroad name was initially kept as a separate division of the UP, but over time the line was moved around and divided among different UP subsidiaries. While most of the corridor is still used today it is no longer contiguous. The southern portion of the line, from Provo to Lynndyl, remains under UP ownership and is today known as the Sharp Subdivision. The portion through the Salt Lake Valley is today owned by the Utah Transit Authority and used for the TRAX light rail system, primarily the Blue Line. The portion between the end of the Blue line and Provo has had the rails removed, however UTA has retai