By Chris Bryant
Cleaning the Sydney Harbour Bridge used to be a dangerous, dirty and laborious job. As soon as a team of workers, operating a sandblaster, reached one end of the iconic structure they had to start again to keep 485,000 square metres of steel pristine.
Now two robots called Rosie and Sandy, built by SABRE Autonomous Solutions, blast away paint and corrosion all day long without a break. They determine which area needs most attention via a laser scan and move about on rails.