A portion of the busy Dr Narayan Hardikar Road in Worli, which leads to the Bandra-Worli sea link, caved in on Wednesday.
The road, perpendicular to the arterial Annie Besant Road, gave way, after a 90-year-old storm water drain running 10 feet under the road collapsed.
This is seventh major cave-in in the past two years.
Civic body officials permanent repair of the drain can be done only after the monsoon, but temporary repairs will be complete in three days.
The incident took place at 9.30 am when a mini-bus was passing over it. One of the bus tyres got stuck in the crater. The road now has a 10-feet-wide and 20-feet-deep crater — deep enough for a two-storey building.
Nobody was injured in the incident.
“People inside the bus panicked and jumped from the window and doors,” an eyewitness said.
“It is a double-barrel drain of which only one barrel has collapsed so water can follow through the other barrel. We cannot repair it now because if we close the drain completely, it will lead to water-logging in the nearby areas,” said Chandrakant Watwe, chief engineer, storm water drains.
The drain carries rainwater from areas such as Parel and Elphinston and throws it back into the sea from Cleveland Bunder, near Worli seaface.
“Work will be completed in three days. It will cost Rs 15 lakh,” said a BMC official, requesting anonymity.
“A section of the road has been barricaded and only smaller vehicles are being allowed on it to avoid another cave-in,” said Aseem Gupta, additional municipal commissioner.
Only 50 metres of the road has been layered with paver blocks; the rest is concretised. It’s the paver-blocked section that collapsed.
Civic officials said section of the drain has caved in three times 15 years ago, killing six people.
The road was concretised after the previous accident.
Expect traffic snarls
After Dr Narayan Hardikar Road caved in, traffic was affected as the 50 metres of the road was cordoned off.
Motorists were stuck in a jam on Annie Besant Road “It took me 40 minutes to reach Century Bazaar from Prabhadevi due to the traffic jam,” said Sabina Mohan, who was driving from Prabhadevi to Haji Ali. Though repair work on the road has started, expect traffic snarls for the next two to three days.