Developed by Advanced Construction Robotics of Pittsburgh, TyBOT did 17,823 ties in two shifts across a 7,775-sq-ft area on a bridge in Wisconsin. 

Standing before a crowd of curious onlookers at a corner of the show floor at the World of Concrete trade show in Las Vegas, Advanced Construction Robotics president and cofounder Jeremy Searock made a sales pitch for TyBot, his company’s rebar-tying robot.