Tracking our TBMs

Cross River Rail’s twin tunnels are now fully excavated, with both of the project’s two massive Tunnel Boring Machines having completed their journey below the Brisbane River and CBD.

You can chart the journeys made by our two TBMs – Else and Merle – on the map below, as they tunnelled from Woolloongabba to Albert Street, before continuing to Roma Street and emerging at the project’s northern portal at Normanby.

Two roadheaders, that tunnelled south from Woolloongabba, have also completed their excavation having broken through into the Boggo Road station cavern.

You can find out more about all things tunnelling on our ‘Guide to tunelling page’.

TBM Else

4,098 metres


TBM Merle

4,083 metres


Roadheader One

865 metres


Roadheader Two

870 metres


Cross passages

Cross passages have not been added to the tracker above but information about them and their locations can be viewed here.

If you need to talk to a member of our team about cross passage construction, you can find our contact details here.

Learn more

Our TBMs were named after two awesome women who were groundbreakers in their own right, here in Queensland. Our roadheaders didn’t have names but were equally awesome! You can read more by clicking the links below.

Find out more about Else Shepherd.

Find our more about Merle Thornton.

Find out more about our roadheaders.