May 2019 update
News Articles | 2 May 2019

May 2019 update

Tunnel boring machine (TBM) Grace and her crew reached another milestone earlier this week: completing 4.5km of tunnelling!

Cross Passages and Emergency Egress Shafts Fact Sheet
Fact Sheets | 30 April 2019

Cross Passages and Emergency Egress Shafts Fact Sheet

Given the length of the tunnels, additional infrastructure is required to provide safe egress between the two tunnels and to ground level in the event of an emergency.

April 2019 update
News Articles | 5 April 2019

April 2019 update

A major milestone was celebrated this week with all tunnel segments required for the 8km twin-bored tunnels produced.

March 2019 update
News Articles | 11 March 2019

March 2019 update

Concrete has been the big ticket item in the past month with slab pours taking place left, right and centre. A lot of construction work has become more visible now with above-ground structures starting to take shape across several of the sites.

Tunnel Boring Machines fact sheet
Fact Sheets | 6 March 2019

Tunnel Boring Machines fact sheet

Tunnel boring machines (TBMs) are large machines that excavate below the ground surface, while simultaneously installing concrete lining units to build a tunnel.

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