December 22, 1982

UP-Missouri Pacific-Western Pacific Merger Passes

Union Pacific saw attractive partnership opportunities in the Missouri Pacific, which served the South Central states and the Gulf Coast, and the Western Pacific, which connected Salt Lake City with northern California. The MP’s north-south routes complemented UP’s east-west rails. MP’s nearly 12,000 miles of track actually made it larger than the UP system. The merger was challenged by many of the railroads that served the western U.S., but eventually was approved by the ICC two years after application. The resulting rail network made UP the third-largest system in the nation.

Event Media

To maintain a competitive environment as defined by the ICC, the UP-MP-WP merger conditions gave the Southern Pacific trackage rights from Kansas City to St. Louis via the Missouri Pacific, and Rio Grande received rights from Pueblo, Colo., to Kansas City.

In 2012, Union Pacific celebrates the shared stories that have shaped our country since 1862. To mark our 150th anniversary, we invite you to explore how the nation’s largest railroad came to be and how UP continues to build America with innovation and tenacity, touching the lives of nearly every citizen.