A water main unleashed a torrent of floodwater in Toronto's Port Lands area early Tuesday morning, causing a sinkhole to open up and swallow a TTC vehicle.

The damaged main burst around 5:30 a.m. and subsequently forced police to close a 230-metre stretch of Commissioners Street. The roadway is impassable in both directions from Bouchette Street to Logan Avenue.

Fire trucks remained at the scene while city crews tried to mend the broken main, which is nearly 100-years-old according to Toronto Water.

"It has created a void under the road," said the city's Bill Shea. He estimates the sinkhole is six-feet deep.

"It's a little pool forming there."

Before and after images show a sinkhole that opened up along Commissioners Street swallow a TTC Wheel Trans sedan. (Tony Smyth and Paul Smith/CBC)

Meanwhile, a TTC Wheel Trans supervisor's car is currently inaccessible due to dangerously high water levels.

It drove over the void in the roadway and was swallowed by the sinkhole, Shea said.

The supervisor was investigating the roadway's conditions at the time, noted TTC spokesperson Mike DeToma. But he was able to escape the sedan before it was pulled under the water, he added.

The TTC has rerouted the 72 Pape bus around the area.