TRANSPAC Tour of the 4th Bore Construction – 511 Contra Costa

TRANSPAC Tour of the 4th Bore Construction

October 14, 2010. TRANSPAC, along with 511 Contra Costa staff got a glimpse of the Caldecott Tunnel fourth bore construction site.  Thus far they have drilled a hole 151 feet deep.
Here are some pictures that we took along the tour:

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