Tunneling to begin Monday in Orinda

Caltrans contractors plan to start carving out the fouth bore of the Caldecott Tunnel on Monday. The roadheader that is being used for the project is a 130-ton, 54-foot-long and 14-foot-tall excavation device with a rotating cutter mounted on a boom. The roadheader will dig the 3,389-foot-long bore that will Keep reading >>

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According to mercurynews.com, fossil hunter Joshua Wyatt recently found the imprint of an avocado tree leaf- about 10 million years old- preserved in smooth rock like leaves flattened between layers of wax paper. The excavation of the fourth bore of the Caldecott Tunnel has opened a door for paleontologists Keep reading >>

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Caldecott Tunnel Fourth Bore Construction Enters Phase Four

Construction on the fourth bore is expected to enter a new phase this week with assembly of the road header on the Orinda side in preparation to begin boring a hole in the mountain. Jeff Weiss, Caltrans spokesman said, “There’s still a lot of work to be done building the Keep reading >>

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