The deceased, Santosh Gopal Chavan, was returning home to Nerul on his motorcycle after completing his duty at the office of the Additional Commissioner of Police (East Region) in Chembur. A day after a piling rig collapsed at a flyover construction site in Mankhurd, killing a Mumbai Police constable and throwing traffic on the Sion Panvel highway in chaos, the Brihanmumbai Municipal Corporation (BMC) Thursday said work is underway to remove the remaining portion of the machine, even as the stretch continued to witness severe traffic congestion. The incident, which occurred on the Sion–Panvel Highway near Maharashtra Nagar on Tuesday night, has disrupted traffic on one of the city’s busiest corridors linking Mumbai to Navi Mumbai and Pune . Commuters on Wednesday had reported being stuck for hours, with congestion persisting into Thursday.…