Bay Tunnel - TunnelCast
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March, 2008: For the first time a bored tunnel will cross the San Francisco Bay. With an estimated price tag of US$270 million the Bay Tunnel is the largest and most expensive element of the San Francisco Public Utilities Commission's (SFPUC) giant program to seismically upgrade its aging pipelines, tunnels, reservoirs and dams.

Snapshot

Bay Tunnel for the SFPUC

Paula Wallis reports for TunnelTalk
Location
San Francisco Bay Area
Dimensions
Single bore roughly 5 miles (8km) under the San Francisco Bay at depths ranging from 75 to 110ft (22-33m). Approximately 108in (3m) internal diameter
Type
Water Tunnel
Contract Value
$270-$280 million
Method
EPB
Primary Designer
Construction Management
Status:
Bidding: Bid opening, October 29, 2009
Pre-qualification information
Contracting opportunities