Abstract
There are more than seven hundred thousand bridges in Japan, and there are a lot of unprobed bridges. Bridge administrators are suffering from lacking of budget and engineers. Thus, we developed winch wiring robot system, named as ARANEUS. The ARANEUS has eight independent controlled winches and hanged by eight wire under a bridge. And, The ARANEUS equips gyro sensor, network camera. We describe a system configuration of the robot, and experiment for verification on a real bridge.