33 USC § 494a - Study of bridges over navigable waters

---
identifier: "/us/usc/t33/s494a"
source: "usc"
legal_status: "official_prima_facie"
title: "33 USC § 494a - Study of bridges over navigable waters"
title_number: 33
title_name: "NAVIGATION AND NAVIGABLE WATERS"
section_number: "494a"
section_name: "Study of bridges over navigable waters"
chapter_number: 11
chapter_name: "BRIDGES OVER NAVIGABLE WATERS"
subchapter_number: "I"
subchapter_name: "GENERAL PROVISIONS"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Pub. L. 111–281, title IX, § 905, Oct. 15, 2010, 124 Stat. 3012; Pub. L. 112–213, title VII, § 702(a), Dec. 20, 2012, 126 Stat. 1580.)"
---


# § 494a. Study of bridges over navigable waters

March 23, 190633 U.S.C. 491January 1, 2006August 3, 2011

The Commandant of the Coast Guard shall submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a comprehensive study on the construction or alteration of any bridge, drawbridge, or causeway over the navigable waters of the United States with a channel depth of 25 feet or greater that may impede or obstruct future navigation to or from port facilities and for which a permit under the Act of  ( et seq.), popularly known as the Bridge Act of 1906, was requested during the period beginning on , and ending on .

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**Source Credit**: (Pub. L. 111–281, title IX, § 905, Oct. 15, 2010, 124 Stat. 3012; Pub. L. 112–213, title VII, § 702(a), Dec. 20, 2012, 126 Stat. 1580.)

## Editorial Notes

### References in Text

Act of  ( et seq.), popularly known as the Bridge Act of 1906, referred to in text, is , , which enacted sections 491 to 494 and 495 to 498 of this title. For complete classification of this Act of the Code, see Short Title note set out under  and Tables.

### Amendments

2012— amended section generally. Prior to amendment, text read as follows: “The Commandant of the Coast Guard shall submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a comprehensive study on the proposed construction or alteration of any bridge, drawbridge, or causeway over navigable waters with a channel depth of 25 feet or greater of the United States that may impede or obstruct future navigation to or from port facilities.”