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Crenshaw/LAX Tunnel Boring Machine (TBM)

Fun Facts

What is a Tunnel Boring Machine (TBM)?

A TBM is like a giant drill. The TBM will slowly drill through the earth, digging the tunnels needed for the trains to travel underground. The tunnels will connect three stations from Expo/Crenshaw to Vernon/Crenshaw. The TBM will dig a tunnel along Crenshaw Blvd from Exposition Blvd to Vernon St. Then it will turn around and dig all the way back to the beginning.

When will it start work?

It starts work in Fall of 2015, after it has been assembled and tested. It will take three months to put it together.

How does it work?

The front section of the TBM is called the shield. At the front of the shield is the cutter head. The cutter head is like a giant round circular cheese grater. The shield has two jobs; it drills through the dirt to create a large hole which it then lines with concrete segments to form complete rings. These rings support the tunnel.

Contact Us

Tel: 213.922.2736

crenshawcorridor@metro.net

metro.net/crenshaw

twitter.com/crenshawtbm

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Please use the materials below to learn more about the Crenshaw/Lax Transit Project Tunnel Boring Machine (TBM).

Crenshaw/LAX Tunnel Boring Machine Fun Facts Poster
Crenshaw/LAX Tunnel Boring Machine Fun Facts Sheet
Crenshaw/LAX Tunnel Boring Machine Fun Facts Poster Crenshaw/LAX Tunnel Boring Machine Fun Facts Sheet

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