Posey Tube
The Posey Tube, a 1928 engineering marvel, is the first underwater vehicular tunnel in the US, connecting Oakland to Alameda.
Highlights
Must-see attractions
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Best Time
Avoid peak commute rush
Posey Tube
Best Time
Avoid peak commute rush
Highlights
Must-see attractions
The Posey Tube, a 1928 engineering marvel, is the first underwater vehicular tunnel in the US, connecting Oakland to Alameda.
🚗 One-Way Traffic Flow
Remember: Posey Tube goes Oakland to Alameda. Use Webster Street Tube for Alameda to Oakland.
🚲 Bike & Pedestrian Access
While the tunnel itself isn't for bikes, the Bay Farm Bridge offers a safe, separated bike path to Alameda.
Quick Facts
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Highlights
Discover the most iconic attractions and experiences
Historic Underwater Journey
Oakland Estuary
Experience a piece of engineering history as you travel beneath the water, connecting Oakland and Alameda.
Architectural Prototype
Oakland Estuary
Witness the groundbreaking design that set the standard for underwater vehicular tunnels nationwide.
Connecting Oakland & Alameda
Oakland Estuary
A vital artery for commuters and visitors, offering a unique perspective of the Bay Area's infrastructure.
Plans like a pro.
Thinks like you
Planning Your Visit
Navigating the Estuary
A Glimpse into History
Best Times
Insider Tips
from TikTok, Instagram & Reddit
🚗 One-Way Traffic Flow
Remember: Posey Tube goes Oakland to Alameda. Use Webster Street Tube for Alameda to Oakland.
🚲 Bike & Pedestrian Access
While the tunnel itself isn't for bikes, the Bay Farm Bridge offers a safe, separated bike path to Alameda.
💡 Historic Engineering
Appreciate the 1928 construction – a pioneering feat for underwater tunnels!
📸 Bay Area Views
Enjoy the unique perspective of driving through this historic underwater passage.
Tips
from all over the internet
🚗 One-Way Traffic Flow
Remember: Posey Tube goes Oakland to Alameda. Use Webster Street Tube for Alameda to Oakland.
🚲 Bike & Pedestrian Access
While the tunnel itself isn't for bikes, the Bay Farm Bridge offers a safe, separated bike path to Alameda.
💡 Historic Engineering
Appreciate the 1928 construction – a pioneering feat for underwater tunnels!
📸 Bay Area Views
Enjoy the unique perspective of driving through this historic underwater passage.
What Travellers Say
Reviews Summary
Visitors appreciate the Posey Tube as a functional and historic piece of infrastructure connecting Oakland and Alameda. Its unique construction and role as the first of its kind in the US are often highlighted. Some find the experience of driving underwater novel, though it's a brief journey. The main point of confusion for some is the one-way traffic flow between the Posey and Webster Street Tubes.
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
To travel from Oakland to Alameda, you must use the Posey Tube. For the reverse trip from Alameda to Oakland, you'll need to use the parallel Webster Street Tube. +1
No, the Posey Tube is for vehicular traffic only. For cycling to Alameda, consider the Bay Farm Bridge which has a separated bike path.
The Posey Tube is the primary route for Oakland to Alameda traffic, while the Webster Street Tube serves the opposite direction. Both are underwater tunnels. +1
Yes, buses utilize the Posey Tube for travel between Oakland and Alameda.
The drive through the Posey Tube is very short, typically only a minute or two, depending on traffic conditions.
🎫 🎫 Tickets & Entry
There are no tolls for using the Posey Tube or the Webster Street Tube. They are free to use for vehicular traffic.
The Posey Tube is open 24/7 for vehicular traffic traveling from Oakland to Alameda.
No, there is no entrance fee or admission ticket required to drive through the Posey Tube.
Pedestrian access is not permitted in the Posey Tube. For walking or cycling, the Bay Farm Bridge is a recommended alternative.
Standard vehicle restrictions apply, such as those for oversized loads. It is designed for regular road vehicles.
🎫 🧭 Onsite Experience
The Posey Tube offers a unique experience as it was the first underwater vehicular tunnel of its kind in the US, built using an innovative sinking method. +1
While driving, you'll experience the enclosed underwater environment. Some find the lighting and the feeling of being beneath the water interesting.
As a public roadway, the Posey Tube is accessible to all vehicles. However, there are no specific pedestrian facilities within the tube itself.
The Posey Tube can get quite crowded during peak commute hours on weekdays. Traveling during off-peak times can offer a less congested experience.
The speed limit within the Posey Tube is typically set at 35 mph, but always adhere to posted signs for safety.
📸 📸 Photography
While photography inside the tube is limited due to driving, the surrounding areas offer views of the estuary and the tunnel entrances.
Consider capturing the tunnel entrances from Oakland or Alameda, or look for vantage points along the estuary for wider shots.
It is unsafe and illegal to take photos while driving. Passengers can capture the experience if conditions permit.
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