Eastside LRT Project Los Angeles
United States, Los Angeles, CA

Los Angeles' metro and LRT network had six lines. The Gold Line connects Pasadena with the Union Station in downtown LA. What was missing is the extension of the LRT to East Los Angeles. In Boyle Hights the streets are so narrow that the new line had to be built underground along First Street. This was the job for "Lola" and "Vickey".

The two machines had to be extensively protected against firedamp, because of the methane expected in Los Angeles' underground. The protection concerned the motors, but every single switch as well. The screw conveyor did not unload onto the usual belt conveyor but was connected to another srew conveyor that ended at the end of the better ventilated gantry.

In December and November 2006, "Lola" and "Vickey" successfully completed their tunnel drives.

Data Sheet

Country, Location

United States, Los Angeles, CA






Soft ground

Tunnelling length

3,911 m

Machine Data

2x EPB Shield:
Diameter: 6,514 mm
Lining method: Segmental lining
Cutterhead power: 945 kW
Torque: 4,377 kNm

Your contact person Contact us

Steffen Dubé President and General Manager Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser Commercial Manager Herrenknecht Tunnelling Systems USA, Inc.