UP/NS Merger: The Highlights
The proposed Union Pacific–Norfolk Southern merger has the potential to reshape the U.S. freight rail network, creating new opportunities for some shippers while raising important questions for others. At Russell-Kroese Partners, our focus is helping clients understand what the proposed transaction could mean for their business. This goal of this page is to bring together key information about the merger, the Surface Transportation Board review process, important participation opportunities and deadlines, and considerations for companies evaluating how the transaction may affect them.
Where the Merger Stands Today
The STB accepted the revised application for consideration in May, requested supplemental information, and has now moved the proceeding into the merits phase with a formal procedural schedule.
The proposed Union Pacific–Norfolk Southern merger could reshape rail service across much of the United States. The impact will not be the same for all shippers. For some, the merger could create new opportunities. For others, it will have adverse effect. Potential results are:
Potential new single-line routes and market access
Reduced interchange on certain movements
Potential service or transit-time opportunities
Changes to competitive rail options
Potential impacts to rates and routing flexibility
Effects on reciprocal switching, gateways, or access to connecting carriers
Implications for rail-served sites, industrial development, and future location decisions
The impact will be different for every business—which makes understanding your position important.
What Could the UP–NS Merger Mean for You?
Understanding the STB Review Process
The Surface Transportation Board (STB) is the federal agency responsible for reviewing major railroad mergers. Its review considers how the proposed UP–NS transaction could affect competition, rail service, network efficiency, shippers, communities, and the broader freight system.
The STB’s acceptance of the merger application allows the regulatory review to move forward; it does not mean the merger has been approved. Interested parties have opportunities throughout the process to provide information and perspectives for the Board’s consideration.
What is a Notice of Intent to Participate
A Notice of Intent to Participate identifies a company or organization that intends to formally participate in the STB’s review of the merger.
Participation does not mean supporting or opposing the transaction. It gives stakeholders the opportunity to provide information about potential benefits, concerns, or other impacts the merger could have on their business.
For rail customers, the key question is simple: Could this merger meaningfully affect how your freight moves or the competitive options available to your business?
Should Your Company Participate?
Whether your company should participate depends on how the proposed merger could affect your business. Rail customers may want to consider potential changes to service, routing, competition, rates, market access, or future growth opportunities. Participation can be valuable for companies that expect either meaningful benefits or concerns and want to ensure their perspective is part of the STB’s review.
How Can Russell-Kroese Partners Help?
We have a quick merger assessment program we craft to your business that will get you an answer, give you insights, and help you move forward by:
Determine what the proposed merger could mean for your business
Decide whether your voice should be part of the STB record.
Help develop and draft clear, fact-based comment letters that communicate how the proposed merger could affect your business and ensure your perspective is part of the STB record.
Before the rail landscape changes, understand where your business stands—and make sure your interests are represented.
Want deeper insight beyond the public updates? Merger Updates is RKP’s premium monthly subscription designed to help industry leaders cut through regulatory filings, technical details, and industry commentary to understand what matters most.
Plain-English takeaways on key developments
Executive-level perspective on what to watch now and what may come next
Insight from former railroad executives with firsthand industry experience
A concise alternative to hours of reading, research, and interpretation
An optional private review with RKP Partners for organizations that want to discuss the latest developments, ask questions, and explore potential implications for their business
Subscribe to RKP’s Merger Updates for monthly analysis, context, and forward-looking perspective on the proposed UP/NS transaction.
Key Upcoming Dates To Watch
September
September 4, 2026 New date (announced 08/31/26) is September 30, 2026 — Notices of intent to participate in these proceedings due.
September 9, 2026 — Descriptions of anticipated responsive, including inconsistent, applications due.
October
October 5, 2026 — Petitions for waiver or clarification with respect to responsive, including inconsistent, applications due.
November
November 13, 2026 — Responsive environmental information and environmental verified statements for responsive, including inconsistent, applications due.
November 18, 2026 — Comments, protests, requests for conditions, and any other evidence and argument in opposition to the Revised Application due, except DOJ and USDOT filings. Responsive, including inconsistent, applications due.
December
December 3, 2026 — Preliminary comments from DOJ and USDOT, if any, due.
December 18, 2026 —Notice of acceptance of responsive, including inconsistent, applications, if any, published in the Federal Register.
9/15/2026
Executive Summary: The September 9 filings by BNSF, CPKC, and CSX were a scheduled step in the STB’s procedural calendar, not a new adverse event, and they do not move our headline approval estimate. What they do change is the character of the remedy package now visible on the record: all three carriers are seeking structural relief rather than the behavioral commitments UP offered in July. Ranked by consequence rather than by likelihood of adoption — the most consequential single item is BNSF’s request for a neutral switching or terminal railroad across UP’s Gulf Coast chemical franchise, followed by BNSF’s 824-mile overhead rights on NS’s Premier Corridor; CSX’s East St. Louis–Kansas City divestiture request ranks first on the probability of producing some remedy but third on consequence. Requested is not imposed, and these opening asks function as negotiating anchors ahead of the November 18 responsive applications — but even a partial grant across the Kansas City corridor, the Gulf Coast, and NS’s Premier Corridor would attack precisely the traffic UP’s single-line conversion case depends on. We are therefore lowering the probability of approval on terms UP would accept from 18% to roughly 15% while holding headline merger approval probabilities at 16% / 23% / 36%, widening the gap between the Board approving the transaction and UP actually closing it.
8/18/2026
Decision No. 30 restarts the case without endorsing it. Served August 18 and signed by all four members, it lifts the abeyance including environmental review, finds the record sufficient to proceed, and adopts a full schedule. The Board wrote that the decision “reflects no view on the merits,” and the STB repeated the point publicly the same day: it is “not a ruling on the merits of the revised application or any issues raised by commenters, including pending motions.” Four motions for summary denial — from five shipper associations, NGFA, BNSF and CPKC/CSX — plus the seven-state attorney general letter are all still pending. That is unusual: the Board chose to advance the case while declining to clear the threshold objections to it.
The length of the schedule is the adverse signal, not the fact of it. The Board adopted a 393-day evidentiary period. Opponents had asked for “the longest evidentiary period permitted by law,” which they computed at 395 days; Applicants asked for 345 days or fewer. Getting 393 is not a compromise, it is the opponents’ number. The Board also noted it is applying its 2001 major-merger rules for the first time, rules it described as placing “a heavier burden on applicants,” and it declined to presume an end-to-end combination harmless, citing its CPKC reasoning in FD 36500. The Board quoted Applicants’ own description of the deal as “unprecedented” back at them, and disposed of Executive Order 14,219 in a footnote.
Six rail unions joined the denial motions on August 19 — the largest new adverse mass this week. BMWED, BRS, SMART Mechanical Division, IAM District 19,TCU and the BLET filed jointly in support of summary denial. Their argument is squarely on the 2001 standard: Applicants have not shown enhancement of intramodal (rail-to-rail) competition and assert they need not, relying on intermodal truck competition instead; they have declined to supply downstream-effects or end-state analysis; and the Service Assurance Plan is “little more than conclusory assertions of intent.” One data point from that filing is deck-quality on its own: Applicants project a net increase of 901 craft positions by year three against combined pre-application craft employment of 63,755, while assuming8% annual attrition. Whether 901 is measured pre- or post-attrition is not stated, so the claimed gain is somewhere between roughly 1% and 2% of the workforce — and the filing offers no explanation of how that headcount absorbs the traffic growth the application projects.
The workpaper problem recurred for the third time, and this episode is the most specific. The Board found that Applicants’ own filters “removed substantial portions of the underlying analysis from the final presentation layer,” and ordered all unfiltered rows refiled by August 28. Dr. Hunt’s filters screened out roughly 31% of merchandise and bulk locations, 59% of intermodal locations and 30% of automotive locations; Bailey’s Appendices D, E and F were limited to “major” points covering about 80% of traffic. The Board did not find the filtering improper, and the order reaches workpapers only — not the narratives or verified statements. It is still the third workpaper episode in seven months, after “a number of technical issues” in January and deficiencies “concerning in their frequency and magnitude” in May.