A portion of August Kranti Road opposite Cumballa Hill Hospital at Kemps Corner caved in Monday morning slowing down peak-hour traffic.
BMC officials said the cave-in that left a 6-foot-wide,10-foot-long and 5-foot-deep hole in the road was caused by a weakened 12-inch water pipeline underground.
A depression in the road was noticed at around 9 am,after which excavation was carried out to discover the cause,said civic officials.
We started excavation to see if stormwater drains were the reason for the depression. We then saw a weakened water pipeline had developed a crack. We are fixing the portion of the pipeline, said Parag Masurkar,assistant municipal commissioner of D-ward.
He said the damaged water line would not affect supply in the area.
Water in this area is supplied after midnight and we would have completed repairs by then, said Masurkar.
Soil corrosion and continuous seepage from century-old stormwater drains and water lines running underground have caused numerous road cave-ins in south Mumbai. Additional municipal commissioner Aseem Gupta said,The network of underground utilities in the island city is over a century old. No amount of fresh road works can solve this problem.
As it is not an arterial road,we did not divert traffic. Internal road traffic has been affected and is moving very slowly, said Tardeo traffic police inspector S M Jadhav.
Monday,Newsline had reported that eight months after many such cave-ins in south Mumbai,BMC was still to find a solution.
There were three cave-ins on Pedder Road last year from July to October.
BMC is yet to make purchase of a ground-penetrating radar (GPR) planned in July 2012. To be procured at an estimated cost of Rs 25-50 lakh,the machine would aid identification of soil,rock structures and utilities up to 10 metres beneath the road. It would also help detect possible cave-ins,culvert collapses and could be used during construction of retaining walls and paverblocks.
After the tender for the machine received a poor response earlier this year,a new one has been floated.