33 U.S.C. § 512
Section 512 · Obstruction of navigation
Amended 1 time on record
Applied in 6 court decisions — leading case Friends of the Everglades v. South Florida Water Management District (2009)
Most recently applied in Friends of the Everglades v. South Florida Water Management District (June 2009)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
No bridge shall at any time unreasonably obstruct the free navigation of any navigable waters of the United States.