On July 4, 1851, ground was broken at St. Louis on the
Pacific Railroad, the predecessor of the Missouri Pacific Railroad. The first section of track was completed in 1852; in 1865, it was the first railroad in
Kansas City, after construction was interrupted by the
American Civil War. In 1872, the Pacific Railroad was reorganized as the Missouri Pacific Railway by new investors after a railroad debt crisis. Because of corporate ties extending back to the Pacific Railroad, Missouri Pacific at one time advertised itself as being "The First Railroad West of the Mississippi". Other predecessors included the
St. Louis, Iron Mountain and Southern Railway (SLIMS),
Texas and Pacific Railway (TP),
Chicago and Eastern Illinois Railroad (C&EI),
St. Louis, Brownsville and Mexico Railway (SLBM),
Kansas, Oklahoma and Gulf Railway (KO&G),
Midland Valley Railroad (MV),
San Antonio, Uvalde and Gulf Railroad (SAU&G),
Gulf Coast Lines (GC),
International-Great Northern Railroad (IGN), Kansas, Nebraska & Dakota Railroad,
New Orleans, Texas and Mexico Railway (NOTM),
Missouri-Illinois Railroad (MI), as well as the small
Central Branch Railway (an early predecessor of MP in Kansas and south-central Nebraska), and joint ventures such as the
Alton and Southern Railroad (AS). Missouri Pacific was under the control of New York financier
Jay Gould from 1879 until his death in 1892. Gould developed a system extending through
Colorado,
Nebraska,
Arkansas,
Texas, and
Louisiana. His son
George Gould inherited control upon his father's death, but lost control of the company after it declared
bankruptcy in 1915. The line was merged with the
St. Louis, Iron Mountain and Southern Railway (SLIMS) and reorganized as the Missouri Pacific Railroad in 1917. Missouri Pacific later acquired or gained a controlling interest in other lines in Texas, including the
Gulf Coast Lines,
International-Great Northern Railroad, and the
Texas and Pacific Railway. The railroad's first heavy repair shops were built in Sedalia, Missouri in 1872. In 1905 several smaller shop sites were consolidated at Sedalia when the old shops were closed and moved to a new site along Marshall Avenue. The MoPac began using the Baring Cross Shops of the
St. Louis, Iron Mountain and Southern Railway in
North Little Rock, Arkansas in 1882. A fire in 1900 caused them to be rebuilt on a larger scale that would ultimately become the primary MoPac shop site (now known as the Downing B. Jenks Shops). Minor locomotive repairs were carried out at the terminals in
St. Louis and
Kansas City. MoPac declared bankruptcy again in 1933, during the
Great Depression, and entered into
trusteeship. The company was reorganized and the trusteeship ended in 1956. By the 1980s, the system owned of rail line over 11 states bounded by
Chicago to the east,
Pueblo, Colorado, in the west, north to
Omaha, south to the
U.S.-Mexico border in
Laredo, Texas, and southeast along the Gulf seaports of
Louisiana and
Texas. MoPac operated a fleet of more than 1,500
diesel locomotives, almost all purchased within the previous 10 years. Under the leadership of Downing B. Jenks, who became president and chief executive in 1961, the company became a pioneer in the early days of computer-guided rail technology. It was a major hauler of coal, grain, ore, autos, dry goods and
shipping containers. At the time of its mega-merger in 1982, the MoPac owned more and newer locomotives and operated more track than partner
Union Pacific Railroad. On December 22, 1982, the Missouri Pacific was purchased by the
Union Pacific Corporation and combined with the
Western Pacific Railroad and Union Pacific Railroad to form one large railroad system. The new entity was called Pacific Rail Systems; though part of the Union Pacific Corporation, all three railroads maintained their own corporate and commercial identity. On December 1, 1989, the
Missouri Kansas Texas and the
Galveston, Houston & Henderson were merged into the Missouri Pacific after having been acquired by the Union Pacific Corporation in 1988. By 1994, all motive power of the Missouri Pacific was repainted and on January 1, 1997, the Missouri Pacific was officially merged into the Union Pacific Railroad by the Union Pacific Corporation. UP continued to use the MoPac headquarters building at 210 N. 13th St. in downtown St. Louis for its customer service center until February 15, 2005. The former MoPac building has undergone rehab as apartments and is now known as Park Pacific. In this table, "MP" includes New Orleans Texas & Mexico and all its subsidiary railroads (Beaumont Sour Lake & Western, I-GN, StLB&M, etc.) that officially merged into MP in 1956. Ton-miles for C&EI in 1970 presumably don't include the L&N portion. By that same definition, MP operated 10,431 route-miles at the end of 1929, after A&G, SAS and Sugar Land had come under NOT&M; NO&LC operated 60 and DK&S (not subsidiary until 1931) operated 6. At the end of 1960, MP operated 9,362 route-miles, NO&LC and DK&S were the same, and M-I operated 172 miles. "T&P" includes its subsidiary roads (A&S, D&PS, T-NM etc.); operated route-miles totaled 2,259 at the end of 1929 (after C≠, PVS and TSL had become subsidiaries) and 2,033 at the end of 1960. == Passenger train service ==