---
kind: "section"
citation: "33 U.S.C. § 521"
title: "33"
title_heading: "Navigation and Navigable Waters"
number: "521"
heading: "Regulations and orders"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/33/521"
units:
  - "Chapter 11 — Bridges Over Navigable Waters"
  - "Subchapter II — Alteration of Bridges"
---

# §521. Regulations and orders


The [Secretary](/usc/33/426h–1.md?p=2) is authorized to prescribe such rules and regulations, and to make and issue such orders, as may be necessary or appropriate for carrying out the provisions of this subchapter.


## Source credit

(June 21, 1940, ch. 409, § 11, 54 Stat. 501.)