Caldecott Tunnel Trivia Question 5 | 511 Contra Costa

Caldecott Tunnel Trivia Question 5

Photo credit: Karl Nielsen

Congratulations to Julie D. of Walnut Creek! She correctly answered how many vehicles travel through the Caldecott Tunnel every day – 160,000 – and won $10 to Peet’s.
The Fourth Bore Project recently celebrated a major milestone with the tunnel “breakthrough”. What does this significant milestone represent for the project?

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