George A Posey Tube - 1928 - Alameda, CA - Dated Architectural Structures Multifarious on Waymarking.com

"The Posey tube and the Webster Street tube are two parallel underwater tunnels connecting the cities of Oakland and Alameda, California, running beneath the Alameda–Oakland Estuary. Currently, the Posey tube carries Oakland-bound traffic under the Estuary, while the Webster tube carries traffic bound for Alameda.

The Posey tube is the second-oldest underwater vehicular tunnel in the US, preceded only by the Holland Tunnel." (visit link)

Year built or dedicated as indicated on the structure or plaque: 1928 Full Inscription (unless noted above): George A Posey Tube.Erected AD 1928 by County of Alameda. Board of Supervisots: Chas W Heyer - chairman. William J Hamilton, John F Mullins, Redmond C Staats, Ralph V Richmond. Earl Warren District Attorney. Website (if available): Not listed

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