SR99 Highway Tunnel

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Location

Seattle, Washington, USA

Scope of Supply

Specialized 17-inch diameter Disc Cutters

Tunnel Length

2.7 km (1.7 mi)

Ground Condition

Glacial Till with up to 10 Bar Water Pressure

 

Pressure Compensated Cutters
for World’s Largest TBM

  • Robbins' patented pressure compensated disc cutters equalize pressure and allow disc cutters to effectively excavate in high water pressures
  • The disc cutters will be used for the world’s largest tunnel boring machine—17.6 m (58.0 ft) in diameter