Overton Park is a large, longstanding public park in Memphis, Tennessee. In the mid-20th century, state and local transportation planners proposed routing a segment of Interstate 40 through the park. The Department of Transportation Act of 1966, §4(f), and §138 of the Federal-Aid Highway Act (now codified at 49 U.S.C. §303 and 23 U.S.C. §138) prohibit the use of public parkland for highway projects unless (1) there is no feasible and prudent alternative to the use of the park, and (2) the project includes all possible planning to minimize harm to the park. Despite the presence of potential non-park alternatives, the Secretary of Transportation, John A. Volpe, approved federal funding and location for the park route without issuing formal findings that the statutory prerequisites were satisfied. Citizens to Preserve Overton Park, a community group, and others sued to enjoin the approval, arguing that the Secretary violated §4(f) and the APA by failing to show the absence of feasible and prudent alternatives and by not demonstrating all possible harm-minimizing planning. The district court granted summary judgment for the Secretary, relying in part on affidavits developed in the litigation; the Sixth Circuit affirmed. The Supreme Court granted certiorari.
Is the Secretary of Transportation's approval of a highway through public parkland subject to judicial review under the APA, and if so, what standard and scope of review apply? Substantively, did the Secretary comply with §4(f) by demonstrating no feasible and prudent alternatives and by undertaking all possible planning to minimize harm?
1) APA Reviewability and Standard: Agency action is presumptively reviewable under the APA; the §701(a)(2) exception for action "committed to agency discretion by law" is narrow and applies only in rare instances where there is truly no law to apply. In the absence of formal findings based on a trial-type record, courts review under §706(2)(A)'s arbitrary and capricious standard. The reviewing court must engage in a substantial inquiry to determine whether the agency considered relevant factors and made no clear error of judgment, while avoiding de novo review or substituting its policy preferences. 2) Scope and Record Rule: Judicial review is confined to the administrative record before the agency when it made its decision. Post hoc rationalizations by counsel or litigation affidavits cannot supply the basis for review. If the record is inadequate, the court may obtain testimony from the decisionmakers to explain the record but should not convert review into a de novo proceeding. 3) §4(f) Substantive Standard: The Secretary may not approve the use of public parkland for highways unless there is no feasible and prudent alternative to using the park, and the program includes all possible planning to minimize harm. This establishes a strong presumption against using parkland; cost, inconvenience, or ordinary community disruption are insufficient by themselves to render alternatives imprudent—only truly unusual factors or extraordinary impacts may justify selecting a park route.
Yes. The Secretary's decision is reviewable under the APA; §701(a)(2)'s exception does not apply because §4(f) furnishes meaningful standards. The proper standard is arbitrary and capricious review under §706(2)(A). Review must proceed on the administrative record, not on post hoc litigation affidavits. Because the Secretary made no formal findings and the record was inadequate to determine whether §4(f)'s stringent requirements were met, the Court reversed and remanded for plenary review based on the administrative record and, if necessary, limited testimony from decisionmakers.
Reviewability: The Court rejected the argument that the Secretary's approval was unreviewable as committed to agency discretion. Section 4(f) provides detailed, substantive limits—no approval unless no feasible and prudent alternative exists and all possible planning is undertaken to minimize harm—thus furnishing law for courts to apply. The APA's presumption of reviewability controls. Standard and Scope of Review: Because the statutes did not require a formal, on-the-record hearing, the substantial evidence test was inapplicable. The correct standard is arbitrary and capricious review. Yet this is not toothless. The court must conduct a thorough, probing, in-depth review to ensure the agency examined relevant factors and articulated a rational connection between the facts found and the choice made. At the same time, the court must not substitute its judgment for the agency's and may not undertake de novo factfinding except in limited circumstances not present here. Record Rule and Post Hoc Rationalizations: The district court erred in relying on litigation affidavits to justify the agency's action. Judicial review must be based on the administrative record in existence at the time of decision. Contemporaneous findings are not always required by statute, but the agency must provide a record sufficient to enable effective judicial review. If the record is inadequate because the agency failed to explain its decision, the proper remedy is to obtain the necessary explanation from the decisionmakers or to remand for further proceedings, not to uphold the decision based on post hoc rationalizations. Interpretation of §4(f): The Court emphasized that §4(f) strongly protects parkland. Alternatives cannot be rejected lightly as imprudent—mere cost increases, inconvenience, or common community disruptions do not suffice. Only extraordinary factors or truly unusual impacts may justify selecting a route that uses parkland. Additionally, even if no feasible and prudent alternative exists, the agency must still incorporate all possible planning to minimize harm to the park. Because the Secretary's approval lacked a contemporaneous record demonstrating adherence to these strict statutory commands, judicial affirmance was improper.
Overton Park is foundational to administrative law and environmental governance. It cements the presumption of judicial review, clarifies that §701(a)(2) is a narrow exception, and defines the modern arbitrary and capricious standard: a searching yet deferential review focused on whether the agency considered the relevant factors and explained its decision. The case also establishes the record rule—courts evaluate agency action on the administrative record and reject post hoc justifications—thereby promoting transparent, contemporaneous decision-making. For environmental and infrastructure law, Overton Park gives teeth to §4(f), setting a high bar against using public parkland for highways and insisting on rigorous alternatives analysis and harm minimization. Law students learn this case as a template for APA review, statutory interpretation that prioritizes protective mandates, and remedial options (remand with instructions) when agency records are deficient.
Overton Park endures as a guidepost for how courts supervise federal agencies. By narrowing the unreviewability exception, clarifying arbitrary and capricious review, and insisting on record-based justification, the Court reinforced the rule of law in administrative governance. At the same time, it interpreted §4(f) to provide robust substantive protection for public parks, requiring exhaustive consideration of non-park alternatives and comprehensive harm-minimization planning.