A $276 million project will be Caldecott Tunnel’s biggest upgrade since 2013. Here’s what it will do.
- Posted on September 3, 2026
- By The Mercury News
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- 1 min read
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A $276 million project will be Caldecott Tunnel’s biggest upgrade since 2013. Here’s what it will do.
The project will be the most extensive investment in the tunnel since the addition of the fourth bore, completed in 2013.
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