The US Surface Transportation Board has rejected bids by BNSF, CSX and shipper groups to throw out the Union Pacific–Norfolk Southern merger application.
The decision, announced on 18 September, means the board will review the proposed deal in full. The combination, valued at about $85bn when it was announced in 2025, would create the first coast-to-coast freight railroad in the US.
The decision at a glance
- Regulator: Surface Transportation Board (STB)
- Decision: Motions for summary denial of the revised merger application were rejected
- Who opposed: BNSF Railway, CSX Transportation and a coalition of shipper groups
- Next deadline: Opening comments due 18 November 2026
- Following deadline: Responses due 16 February 2027
Who wanted the deal stopped
Three motions were filed on 6 August, arguing that the railroads had not presented an adequate case. They came from BNSF, CSX and a coalition including the American Chemistry Council, American Fuel & Petrochemical Manufacturers, the Alliance for Chemical Distribution, the National Industrial Transportation League and The Fertilizer Institute.
What the board said
The STB said it “exercises its discretion to allow this proceeding to continue,” because “additional evidence and argument will aid its decision-making.” It stressed that the decision “does not reflect any determination on the merits.” Opponents can raise their arguments again in their opening comments.
Why it matters
- A transcontinental railroad. Combining Union Pacific’s western network with Norfolk Southern’s eastern network would allow single-line service coast to coast.
- Competition concerns. Rival railroads and shippers worry about reduced competition and higher rates, particularly for chemicals, fuel and fertiliser.
- A long road ahead. With comments due in November and responses in February, a final decision is still months away.
What it means for shippers
Shippers who rely on rail, especially in chemicals, fuels and agriculture, should follow the proceeding closely and consider filing comments by 18 November. The outcome could reshape routing options, interchange points and pricing across the US rail network.
The bottom line
The UP–NS deal has cleared a procedural hurdle, not a final one. The real test comes when the STB weighs the evidence on competition and service in 2027.
Frequently Asked Questions
What did the STB decide? It rejected motions to dismiss the Union Pacific–Norfolk Southern merger application, allowing a full review.
Who tried to stop the review? BNSF, CSX and a coalition of shipper associations.
Does this mean the merger is approved? No. The STB said the decision does not reflect any view on the merits.
What are the next deadlines? Opening comments are due 18 November 2026, and responses are due 16 February 2027.
Sources
| Source | Used for |
|---|---|
| Surface Transportation Board press release | Decision, opponents, quotes and procedural schedule |
| Union Pacific and Norfolk Southern merger information | Deal background |
Additional Resources
| Resource | What you’ll find |
|---|---|
| Surface Transportation Board – UP-NS merger resources | Filings and procedural documents |
| Association of American Railroads (AAR) | US rail traffic data |
| National Industrial Transportation League (NITL) | Shipper perspective on rail policy |
| American Chemistry Council | Chemical industry rail transport issues |
Data note: The $85bn figure is the deal’s value as announced in 2025. The STB release itself did not state a value.