Sartipi - TunnelCast
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June, 2008 TunnelCast spoke with Bijan Sartipi, Director of District 4 for Caltrans at the North American Tunneling (NAT) Conference in San Francisco about the Caldecott 4th bore and other major tunneling projects for the transportation department.

Snapshot

Caldecott 4th Bore

Paula Wallis reports for TunnelTalk
Location
Oakland, California
Tunnel
Single tube, 3,400ft (1,03m) long, 41ft (12.5m) wide with two lanes, an emergency shoulder and 7 cross passages
Type
Road Tunnel
Owner
Contract Value
$230-$250 million
Method
NATM with sections of drill and blast
Designer
Jacobs Associates, technical design lead for tunnel
Anticipated Project Timeline
Winter 2008/2009: Final Design and Acquire Right of Way
February 2009: Project Advertisement
Summer 2009: Construction Begins
Winter 2013-2014: Completion of Construction