Cheryl K.
7/11/2025
Initially gobsmacked that people are rating a fixed route that has few if any alternatives! Wow. Kind of like rating the Bay Bridge; go ahead, take another road & see how much longer it takes you....
Posey Tube
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(31)
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[800 - 1399] Marina Village Pkwy
Alameda, CA 94501
Posey Tube is a unique underwater tunnel located in Alameda, California, connecting the city to Oakland. Opened in 1963, this historic engineering marvel allows vehicles to traverse beneath the waters of the estuary, providing a vital transport link. The tube is named after Posey Island, which lies nearby, and offers a fascinating glimpse into mid-20th century infrastructure design.
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Reviews
3.531 reviews
John S.
5/3/2025
Yikes. I reminds me of leaving Alameda, which makes me sad, and always getting confused getting back on the freeway to get back to San Francisco. Why is it so confusing at the end? I like the...
Steve D.
2/13/2025
The Posey Tube is the tunnel leaving Alameda, and heads to Oakland. Recently, traffic has been slowing down or just jammed up due to roadwork on the Oakland side. I heard about plans to do a...
David M.
12/10/2023
The nicer of the two tube options to transport from Oakland to the island. It's Buster's favorite as well.
Sandy Y.
12/31/2021
The Posey Tube is a one-way underwater tunnel that gets you from Alameda to Oakland. This is a historical landmark. It was built in 1928. It is the second oldest underwater tunnel in the US....
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