Southern Pacific Railroad

The Southern Pacific (reporting mark SP) (or Espee from the railroad initials) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the names Southern Pacific Railroad, Southern Pacific Company and Southern Pacific Transportation Company.

The original Southern Pacific began in 1865 as a land holding company. The last incarnation of the Southern Pacific, the Southern Pacific Transportation Company, was founded in 1969 and assumed control of the Southern Pacific system. The Southern Pacific Transportation Company was acquired in 1996 by the Union Pacific Corporation and merged with their Union Pacific Railroad.

The Southern Pacific legacy founded hospitals in San Francisco, Tucson, and Houston. In the 1970s, it also founded a telecommunications network with a state-of-the-art microwave and fiber optic backbone. This telecommunications network became part of Sprint, a company whose name came from the acronym for Southern Pacific Railroad Internal Networking Telephony.

The original Southern Pacific Railroad was founded in San Francisco in 1865, by a group of businessmen led by Timothy Phelps with the aim of building a rail connection between San Francisco and San Diego, California. The company was purchased in September 1868 by a group of businessmen known as the Big Four: Charles Crocker, Leland Stanford, Mark Hopkins, Jr. and C. P. Huntington. (The Big Four had, in 1861, created the Central Pacific Railroad (CPRR)) It later acquired the routes of the Central Pacific Railroad in 1885 through leasing. By 1900, the Southern Pacific system was a major railroad system incorporating many smaller companies, such as the Texas and New Orleans Railroad and Morgan's Louisiana and Texas Railroad. It extended from New Orleans through Texas to El Paso, across New Mexico and through Tucson, to Los Angeles, through most of California, including San Francisco and Sacramento. Central Pacific lines extended east across Nevada to Ogden, Utah, and reached north through Oregon to Portland. Other subsidiaries eventually included the St. Louis Southwestern Railway (Cotton Belt, reporting marks SSW), El Paso and Southwestern Railroad, the Northwestern Pacific Railroad at 328 miles (528 km), the 1,331-mile (2,142 km) Southern Pacific Railroad of Mexico, and a variety of 3 ft (914 mm) narrow-gauge routes.

The company was headquartered in the Flood Building in San Francisco's downtown shopping district in 1907. Ten years later, they moved into the historic 11-story, 65-metre (213 ft) Southern Pacific Building, also known as "The Landmark", located at One Market Street on the Embarcadero whose construction started in 1916. At its completion, the building's first floor was devoted to retail except for the portion facing the rear courtyard (opening to Mission Street), which was reserved for Southern Pacific. SP rented the second floor to a tenant, but occupied floors three through ten with various offices. For nearly a century, the building was topped with a large sign emblazoned with a gothic "S·P" marking the company's San Francisco roots.

The SP was known for its mammoth back shops at Sacramento, California, which was one of the few in the country equipped to design and build locomotives on a large scale. Sacramento was among the top ten largest shops in the US, occupying 200 acres of land with dozens of buildings and an average employment of 3,000, peaking at 7,000 during World War II. Other major shop sites were located at Ogden, Utah; Houston, Texas; and Algiers, New Orleans. After the 1906 earthquake destroyed much of San Francisco, including the SP shops there, new shops and yards were built six miles south of the city at Bayshore. The Alhambra Shops in Los Angeles consisted of 10 buildings and employed 1,500 but declined in importance when the Taylor Yard was built in 1930.

The SP was the defendant in the landmark 1886 United States Supreme Court case Santa Clara County v. Southern Pacific Railroad, which is often interpreted as having established certain corporate rights under the Constitution of the United States.

The Southern Pacific Railroad was replaced by the Southern Pacific Company and assumed the railroad operations of the Southern Pacific Railroad. In 1929, Southern Pacific/Texas and New Orleans operated 13,848 route-miles not including Cotton Belt, whose purchase of the Golden State Route circa 1980 nearly doubled its size to 3,085 miles (4,965 km), bringing total SP/SSW mileage to around 13,508 miles (21,739 km). The T&NO was fully merged into the SP in 1961.