Chief Minister Devendra Fadnavis directed BMC commissioner Ajoy Mehta to conduct a primary inquiry at the earliest and name the officers responsible for the incident.
A BMC spokesperson said civic commissioner Ajoy Mehta will meet Road and Bride department officials Friday and then take a call on dismantling the entire FOB.
Without the red signal, the motorists would have passed under the ill-fated bridge near the CSMT railway station, a global heritage site, when a part of it came crashing at around 7.30 pm.
The bridge connected the bustling Chhatrapati Shivaji Maharaj Terminus railway station with the Azad Maidan Police Station.
A 13-year-old girl on Sunday jumped out of a moving local train near the Chhatrapati Shivaji Maharaj Terminus in south Mumbai after a man entered the ladies compartment, fearing he would molest her.