Drainage work?

What appears to be major drainage work is taking place in the area between JB Singh Road and Vlissengen Road, beginning from the David Street junction and heading north towards the Kitty Seawall in the vicinity of Carifesta Avenue. There has been no announcement about this work so far and workmen in the area were unable to shed light yesterday.
What appears to be major drainage work is taking place in the area between JB Singh Road and Vlissengen Road, beginning from the David Street junction and heading north towards the Kitty Seawall in the vicinity of Carifesta Avenue. There has been no announcement about this work so far and workmen in the area were unable to shed light yesterday.