Science & Tech
2
The Oakland Portal's elaborate Beaux Arts façade conceals eight massive fans that draw in fresh air and expel foul air to prevent carbon monoxide buildup in the George A. Posey Tube, an underwater automobile tunnel that runs under Harrison Street between the cities of Oakland and Alameda. One block west sits the Webster Tube Portal, a 1963 structure that serves the same function as the more decorative Oakland Portal. At the time of its construction, the Posey Tube was the largest underground tunnel in the world. George Lucas filmed a scene in the tunnel for THX 1138, Lucas's first feature film. Designer Henry H. Meyers. Construction date 1925-28. Architectural style Beaux Arts derivative/Art Deco.
Hear stories like this as you drive
ExploreHere reads historical markers out loud as you pass them: over 325,000 stories across the US. No account needed.
4.7 · 800+ ratings · Free
FIND IT
Oakland, California · United States
