---
kind: "unit"
title: "23"
title_heading: "Highways"
key: "chI/subchH/part771"
level: "part"
label: "Part 771"
heading: "Environmental Impact and Related Procedures"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/23/chI-subchH-part771"
sections_count: 25
---

# Part 771 — Environmental Impact and Related Procedures

Title 23 C.F.R. — Highways › Chapter I — Federal Highway Administration, Department of Transportation › Subchapter H — Right-Of-Way and Environment

## Sections

- [§771.101. Purpose.](/cfr/23/771.101.md)
- [§771.103. Reserved](/cfr/23/771.103.md)
- [§771.105. Policy.](/cfr/23/771.105.md)
- [§771.107. Definitions.](/cfr/23/771.107.md)
- [§771.109. Applicability and responsibilities.](/cfr/23/771.109.md)
- [§771.111. Early coordination, public involvement, and project development.](/cfr/23/771.111.md)
- [§771.113. Timing of Administration activities when NEPA applies.](/cfr/23/771.113.md)
- [§771.115. Classes of actions.](/cfr/23/771.115.md)
- [§771.116. FRA categorical exclusions.](/cfr/23/771.116.md)
- [§771.117. FHWA categorical exclusions.](/cfr/23/771.117.md)
- [§771.118. FTA categorical exclusions.](/cfr/23/771.118.md)
- [§771.119. Environmental assessments.](/cfr/23/771.119.md)
- [§771.121. Findings of no significant impact.](/cfr/23/771.121.md)
- [§771.123. Draft environmental impact statements.](/cfr/23/771.123.md)
- [§771.124. Final environmental impact statement/record of decision document.](/cfr/23/771.124.md)
- [§771.125. Final environmental impact statements.](/cfr/23/771.125.md)
- [§771.127. Record of decision.](/cfr/23/771.127.md)
- [§771.129. Re-evaluations.](/cfr/23/771.129.md)
- [§771.130. Supplemental environmental impact statements.](/cfr/23/771.130.md)
- [§771.131. Emergency action procedures.](/cfr/23/771.131.md)
- [§771.133. Compliance with other requirements.](/cfr/23/771.133.md)
- [§771.137. International actions.](/cfr/23/771.137.md)
- [§771.138. Timelines, page limits, and certifications.](/cfr/23/771.138.md)
- [§771.139. Limitations on actions.](/cfr/23/771.139.md)
- [§771.141. Reliance and adoption efficiencies.](/cfr/23/771.141.md)