Sydney's M6 Motorway Faces Years-Long Delay Due to Sinkholes

A 244-metre stretch of tunnels in Rockdale is causing significant setbacks, with completion now projected between 2027 and 2028.

The M6 motorway project in Sydney has been delayed by a massive sinkhole that opened in March, directly impacting a 244-metre tunnel section.
Transport for NSW has confirmed that the project, originally set to open by the end of 2025, may now be delayed until 2027 or 2028.
The sinkholes have necessitated a complex redesign of the tunnels, alongside potential relocation of critical utilities like gas lines and water mains.
The cost of the project has already increased by $500 million to $3.1 billion, with further financial implications expected due to the delays.
Work on the affected tunnel section has been paused indefinitely, with ground stabilization and safety assessments ongoing before tunneling can resume.