Tunnel Boring Machine Kathleen broke-through to Blues Point last week marking the completion of tunnelling for the Sydney Metro project.

Named after Kathleen Butler, who played a vital role in building the Sydney Harbour Bridge, the TBM completed twin tunnels, each one 885 metres long and up to 40 m below sea level from Barangaroo to Blues Point.

This marks the completion of a total of 31 kilometres of tunnels delivered by 5 TBMs for the Sydney Metro project.

But the occasion wasn’t celebrated with the usual fanfare as ministers are busy dealing with a health crisis.