SUBCHAPTER I—GENERAL PROVISIONS (§§ 491—508)
- § 491. Approval of and deviation from plans; exemptions
 - § 492. Bridge as post route; limitation as to charges against Government; telegraph and telephone lines
 - § 493. Use of railroad bridges by other railroad companies
 - § 494. Obstruction of navigation; alterations and removals; lights and signals; draws
 - § 495. Violations of orders respecting bridges and accessory works
 - § 496. Time for commencement and completion of bridge
 - § 497. “Persons” defined
 - § 498. Reservation of right to alter or repeal
 - § 498a. Repealed.]
 - § 498b. Repealed.]
 - § 499. Regulations for drawbridges
 - § 500. Deflection of current; liability to riparian owners
 - § 501. Omitted
 - § 502. Alteration, removal, or repair of bridge or accessory obstructions to navigation
 - § 503 to 507. Repealed.]
 - § 508. Amount of tolls