Dadarao Bilhore, a Mumbai resident, who lost his 16-year-old son because of a pothole on a road three years ago, filled up 556th pothole in the city on Sunday. Mr Bilhore' son Prakash died on July 28, 2015, after his bike fell into a deep pothole on a rainwater clogged Jogeshwari-Vikhroli Link Road (JVLR) in Mumbai.