Sinkhole Partially Swallows Bus In Sydney, Causing Significant Traffic Delays

A bus has fallen into a large sinkhole in a south Sydney suburb, causing significant traffic delays.

A large sinkhole has partially swallowed a bus in the south Sydney suburb of Caringbah, causing significant traffic delays in both directions.

The sinkhole opened up Wednesday morning due to a water main bursting.

The sinkhole opened up in Caringbah after a water main burst. Photo: Supplied.

Calls were made for a "large tow" at about 11.30am, with reports the water had subsided by about 11.36am.

However, the bus is still stuck, and it is not known how long it will take to remove it.

"I'm no expert but I think it's f***ed," one Snapchat user said.

The incident occurred on a busy intersection of The Kingsway near President Ave. Drivers are being advised to avoid the area of use alternative routes. Buses are experiencing delays of up to 15 minutes, and being diverted away via Denman Ave and Gannons Rd.

A spokesperson for Sydney Water said in a statement it was on site responding to the burst water main, with a customer advocate on side to assist affected customers.

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Traffic management is also assisting crews.

"Sydney Water apologises for the impact to customers and motorists and thanks them for their patience," the spokesperson said.

They said it was too early too determine what caused the burst, but once crew have isolated the break, they will start "urgent repairs".

Periods of prolonged hot and dry weather are known to cause pipe expansion and joint movement, resulting in increased water main breaks and leaks.