A 22-year-old biker from Mumbai, Prafful Sanjay Bhosale, was run over by a dumper supplying material for the Coastal Road project on Tuesday. Police said that the overloaded dumper made an illegal U-turn on Khan Abdul Gaffar Khan road at Worli. "Due to the sudden U-turn, Bhosale directly came under the front wheel of the dumper," a police official said.