Union Pacific Corporation and Norfolk Southern Corporation submitted the first portion of their responses to the Surface Transportation Board’s (STB) May 28, 2026, request for additional information to support their accepted merger application. The filing addresses the STB’s questions regarding the Terminal Railroad Association of St. Louis (TRRA), Kansas City Terminal Railway (KCT), and TTX Company. These entities are jointly owned with other Class I railroads, operated by independent management teams, and governed by non-discrimination policies. Union Pacific and Norfolk Southern stated they do not control these companies and committed to not controlling them post-merger, offering options to the STB up to and including divestiture.

The filing specifically alleges that other Class I railroads opposing the merger are using the TRRA to delay the process. The companies noted that a special meeting called by TRRA’s corporate secretary to discuss reducing Union Pacific’s ownership was attended only by Union Pacific and Norfolk Southern board members, while representatives from BNSF, CSX, and Canadian National did not appear.

Projected Merger Benefits

Connecting the end-to-end networks of Union Pacific and Norfolk Southern aims to create a single-line transcontinental rail service. The companies project this shift from truck to rail could save shippers an estimated $3.5 billion annually. The merger is intended to provide a stronger alternative to long-haul trucking and increase competitiveness within the supply chain.

Regulatory Timeline

The STB accepted the Union Pacific-Norfolk Southern merger application as complete on May 28, 2026. The companies are working toward a mid-2027 completion and have committed to submitting responses to the STB’s remaining requests for additional information by July 27, 2026.

A Kansas federal court has granted class action status to a group of Wichita residents alleging that Union Pacific Corp. historically released hazardous waste from a rail yard site, contaminating the soil and groundwater of thousands of surrounding properties. The litigation cites negligence and cover-ups by the rail transport giant regarding the discharge of chlorinated solvents and other chemicals linked to cancer. These contaminants have migrated almost three miles from the property at 29th Street and North Grove Street through historically Black neighborhoods in northeast Wichita.

In 2023, the Kansas Department of Health and Environment (KDHE) entered a corrective action decision against Union Pacific, specifying a 10-year process of cleanup and remediation for the site. The primary contaminant identified is trichloroethylene (TCE), a solvent used for metal degreasing. According to the KDHE, TCE is a colorless, carcinogenic liquid posing health hazards to the central nervous system, kidneys, liver, immune system, male reproductive system, and developing embryos.

The class seeks compensation to cover the cost of installing home vapor intrusion mitigation systems among other damages. Attorneys at The Lanier Law Firm, representing the plaintiffs, argue that Union Pacific failed to inform the state or nearby residents of the toxic discharge for decades. "For decades Union Pacific failed to inform the state or nearby residents of this massive toxic discharge, leaving thousands of people to pay the price for years of neglect, cover-ups and corporate disregard for basic health and safety," says Mark Lanier of The Lanier Law Firm.

The court's decision allows the affected homeowners to pursue justice as a unified class. "This certification is an important step forward for the Wichita families living with and suffering the effects of this contamination," says Ryan Ellis of The Lanier Law Firm. The legal team includes counsel from Martin, Pringle, Oliver, Wallace & Bauer LLP; Nidel & Nace PLLC; Kresch Legal Services PR PLLC; and German Rubenstein LLP.

The case is titled Faye Black et al. v. Union Pacific Railroad Company, Case No. 23-1218-EFM-GEB, in the United States District Court for the District of Kansas.