605 U.S. 168 (2025) · 2025
Seven County Infrastructure Coalition v. Eagle County
environmental lawNEPAinfrastructurerailroadsclimate impactagency deferenceLandmark
Summary
The Court reversed a D.C. Circuit ruling that had faulted the Surface Transportation Board's environmental review of the Uinta Basin railway. The Court held that NEPA gives agencies discretion to focus on effects tied to the project they regulate and that courts should be deferential when reviewing the scope of an environmental impact statement.
Background & Context
A Utah coalition and a private partner sought approval for a rail line connecting the Uinta Basin to the national rail network. Opponents argued the agency understated the environmental impact because the railway would increase oil extraction, refining, and train traffic through Colorado communities.
The Question Before the Court
How broadly must an agency analyze indirect environmental effects under NEPA when approving a project, and how deferential should courts be to the agency's scope-of-review choices?
Petitioner
Seven County Infrastructure Coalition, et al.
Party asking the Court to review or reverse
Argued
- NEPA review should focus on the project before the agency.
Respondent
Eagle County, Colorado, et al.
Party defending the judgment below
Argued
- The railway's foreseeable effects went beyond the track itself.
The Holding
The D.C. Circuit failed to give the Surface Transportation Board the deference required in NEPA review and required too broad an analysis of environmental effects from projects outside the agency action before it.
The Court
How the justices lined up in this decision.
8-0
Vote
Joined decision
5 justicesAC
Amy Barrett
Majority
BK
Brett Kavanaugh
Majority
CT
Clarence Thomas
Majority
JR
John Roberts
Majority
SA
Samuel Alito
Majority
Concurred
3 justicesEK
Elena Kagan
Concurred
KB
Ketanji Jackson
Concurred
SS
Sonia Sotomayor
Concurred
What this means for you
The ruling gives agencies and project sponsors more room to limit environmental reviews. It may speed infrastructure approvals, but it can also leave affected communities with less analysis of connected pollution, climate, rail-safety, and public-health consequences. The case is especially important for fossil-fuel infrastructure and projects with impacts beyond the immediate construction site.
Key Takeaways
- The Court emphasized agency discretion and judicial deference in NEPA cases.
- The ruling limited required analysis of upstream and downstream projects not before the agency.
- NEPA remains procedural; it requires informed decision-making, not a particular substantive outcome.
- Justice Gorsuch did not participate.
- The decision can reduce the scope of environmental review for major infrastructure projects with connected climate or pollution consequences.
Decision
8-0 majority opinion
- Citation
- 605 U.S. 168 (2025)
- Vote
- 8-0
- Decision type
- Majority opinion
- Argued
- December 10, 2024
- Decided
- May 29, 2025
- Term
- 2024
- Opinion author
- Brett Kavanaugh
Justice Kavanaugh wrote the Court's opinion. Justice Sotomayor concurred in the judgment, joined by Justices Kagan and Jackson. Justice Gorsuch did not participate.