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Sound Transit Beacon Hill Station

Owner:
Client:
Service:
Optimizing station and tunnel configurations, Interpreting geologic information, Preliminary and Detailed Design, Developing of 3D Finite Element Modelsand Performing of structural and seismic Design
Estimated cost: Commencement:
January 01, 2002
Completion date:
January 01, 2009
Location:
401 S. Jackson Street
Seattle, WA 98104
United States
Technical data:
Geology description:

The Beacon Hill Station is located 49 m below the ground surface in complex glacial soils with multiple groundwater horizons. 

Geology types:
Activity:
Categories:
Bid cost: Final cost:
$250 million USD
Service areas:
Construction methods:
Tunneling under:
Tunnel length:
1.5km
Description

The Beacon Hill Station is part of the 22.5 km initial segment of Sound Transit’s Central Link Light Rail. It is located 49 m below the ground surface in complex glacial soils with multiple groundwater horizons

The project comprises deep mined station tunnels and two 1.5 km long Running Tunnels excavated using a tunnel boring machine.

The mined station was excavated through compressible glacial soils with multiple groundwater horizons station excavated using conventional mining techniques.

The access shafts and station headhouses were constructed using slurry walls and cut-and-cover techniques.

Beacon Hill Station Layout
Tunnel Excavation under way