Water

Terminal Hill Tunnel & Shaft

A deep-buried conveyance tunnel and cavern beneath an active water treatment campus.

Tunnel, shaft and cavern engineering integrated with a live water treatment plant.

Construction had to maintain full plant operation throughout, with monitoring and emergency planning developed jointly with the owner.

Scope of work

  • Tunnels & Underground Engineering
  • Construction Management
Terminal Hill Tunnel & Shaft — Milpitas, CA
Terminal Hill Tunnel & Shaft, Milpitas, CA. Hoffman Tunnels provided tunnel and underground design, engineering and construction-phase support.

Project facts

Type
Conveyance + cavern
Setting
Live plant
Operations
Maintained
Completion
2018
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