According to the U.S. Bureau of Labor Statistics (May 2020), the median annual wage for bridge and lock operators was $38,800. The lowest 10% earned less than $25,700, while the top 10% earned more than $58,830.
These workers operate and tend bridges, canal locks, and lighthouses to permit marine passage on inland waterways and coastal waters. Pay varies by location, employer (government vs. private), and experience.