---
kind: "unit"
title: "33"
title_heading: "Navigation and Navigable Waters"
key: "ch11/schII"
level: "subchapter"
label: "Subchapter II"
heading: "Alteration of Bridges"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/33/ch11-schII"
sections_count: 14
---

# Subchapter II — Alteration of Bridges

Title 33 — Navigation and Navigable Waters › Chapter 11 — Bridges Over Navigable Waters

## Sections

- [§511. Definitions](/usc/33/511.md)
- [§512. Obstruction of navigation](/usc/33/512.md)
- [§513. Notice, hearings, and findings](/usc/33/513.md)
- [§514. Submission and approval of general plans and specifications](/usc/33/514.md)
- [§515. Contracts for project; guaranty of cost](/usc/33/515.md)
- [§516. Apportionment of cost](/usc/33/516.md)
- [§517. Payment of share of United States](/usc/33/517.md)
- [§518. Authorization of appropriations](/usc/33/518.md)
- [§519. Noncompliance with orders; penalties; removal of bridge](/usc/33/519.md)
- [§520. Review of findings and orders](/usc/33/520.md)
- [§521. Regulations and orders](/usc/33/521.md)
- [§522. Existing provisions of law](/usc/33/522.md)
- [§523. Relocation of bridges](/usc/33/523.md)
- [§524. Applicability of administrative procedure provisions](/usc/33/524.md)