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A U.S. domestic interline intermodal freight program operated through a partnership between Union Pacific Railroad and CSX.

Last updated August 25, 2026

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Overview

UMAX is a domestic interline intermodal freight program in the United States. It provides container-based shipping and logistics services by combining the rail networks of Union Pacific Railroad and CSX. Rather than functioning as a conventional standalone trucking or consumer-facing brand, UMAX represents a coordinated freight program designed to move domestic intermodal loads across major U.S. markets. The program was launched on March 29, 2010, by Union Pacific and CSX. Its operating model links the two railroads for domestic intermodal transportation, enabling containers to travel over routes served by both companies. This arrangement gives shippers access to a broader rail network than either partner could provide independently and supports the movement of freight between major population and industrial centers. UMAX uses domestic 53-foot containers, a standard format suited to the dimensions and handling requirements of North American freight. The reference material describes a fleet of more than 20,000 such containers. These containers can be transferred between rail terminals and other transport modes, including trucks, allowing UMAX to participate in intermodal supply chains that combine long-distance rail movement with local pickup and delivery. The program traverses major cities throughout the United States. Its principal value proposition is network reach, equipment availability, and coordinated rail service for domestic freight rather than international maritime container transport. UMAX is associated with the broader North American intermodal market, where railroads, trucking companies, logistics providers, and intermodal marketing companies compete and cooperate to move consumer, industrial, and commercial goods. Publicly available information in the supplied reference material is limited. It identifies Union Pacific Railroad and CSX as the parent companies and records the 2010 launch, the domestic focus, the use of 53-foot containers, and the program's nationwide city coverage. It does not establish a separate corporate headquarters, independent ownership structure, current executive roster, financial results, standalone website, or current operating status. Accordingly, UMAX is best characterized as a jointly operated intermodal freight brand or program rather than an independently listed transportation company.

History

UMAX emerged from a partnership between Union Pacific Railroad and CSX to provide a coordinated domestic interline intermodal service in the United States. The program was introduced on March 29, 2010, at a time when domestic intermodal transportation was an important alternative to all-road freight for shipments moving across long distances. By linking the networks of two major freight railroads, UMAX was designed to provide shippers with broader geographic coverage and a more integrated rail transportation option. The program focuses on domestic freight rather than international maritime containers. Its equipment consists of domestic 53-foot containers, which are widely used in North American intermodal logistics because they provide cargo capacity compatible with domestic supply chains. The supplied reference describes UMAX as having a fleet of more than 20,000 containers. These containers support transfers among rail terminals and trucks, allowing freight to move through a combination of long-haul rail service and local drayage. UMAX's interline structure is central to its identity. Union Pacific and CSX remain the identified parent companies, while UMAX functions as the program through which their domestic intermodal capabilities are presented and coordinated. The service traverses major cities throughout the United States, positioning it as a nationwide freight option rather than a regional rail product. Its market context includes railroads, trucking operators, logistics companies, and intermodal intermediaries such as J.B. Hunt, Schneider National, Hub Group, Swift, Pacer International, and Matson Navigation. The available reference material does not provide a detailed chronology after the 2010 launch. It also does not document changes in ownership, executive appointments, financial performance, service withdrawals, or a separate legal entity. For that reason, UMAX's later operating history and present-day status cannot be established from the supplied sources. The documented history supports viewing UMAX as a jointly operated domestic intermodal freight brand associated with Union Pacific and CSX.

  • 2010

    UMAX is launched

    [1]

    Union Pacific Railroad and CSX launched UMAX on March 29, 2010, as a domestic interline intermodal freight program.

Products and positioning

A rail-based domestic intermodal program intended to extend freight network coverage through the combined capabilities of Union Pacific Railroad and CSX.

  • Domestic intermodal freight transportation · 2010

    UMAX domestic interline intermodal service

    UMAX provides domestic containerized freight transportation by coordinating rail service across the Union Pacific and CSX networks. The program uses domestic 53-foot containers and supports freight movement among major U.S. cities. Its intermodal structure allows rail transportation to be combined with truck-based pickup, delivery, and terminal drayage, giving shippers a nationwide domestic logistics option.

Brand decisions

  • 2010

    Creation of a joint domestic intermodal programProduct launch

    Background

    Union Pacific Railroad and CSX sought to provide domestic shippers with an interline freight service spanning both rail networks.

    Action taken

    The two railroads launched UMAX on March 29, 2010, using a fleet of domestic 53-foot containers.

    Aftermath

    The program was described as serving major cities throughout the United States. No further independently documented outcome is provided in the supplied reference.

Sources1 sources

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