Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Bridge Column Inspection 1

Return to Bridge Construction Page

Concept of an Underwater Bridge Column Inspector RoboCrane.  The platform is ballast controlled with a rotary joint and attached sonar sensor.  Close-ups of the winch booms are shown in the upper right.


Created August 24, 2011, Updated January 5, 2017