Alameda: TVA02 - SR-260 : Posey Tube Tunnel Entrance
Posey Tube occupies a submerged crossing beneath the Oakland Estuary in California’s East Bay. It links Alameda with Oakland, carrying road traffic under the tidal channel rather than across a bridge. Opened in 1928 and named for Alameda County surveyor John J. Posey, the tunnel was an important piece of Bay Area transport engineering as Alameda became more closely tied to the region’s growing cities. Its companion, the Webster Street Tube, opened in 1963; together the two passages provide a direct road connection between Alameda and the mainland. The estuary remains central to this urban shoreline, edged by working waterfronts, marinas and the wider harbor landscape of the Port of Oakland.
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Alameda occupies Alameda Island and Bay Farm Island on the eastern side of San Francisco Bay in California’s East Bay. The Oakland Estuary separates its older neighborhoods from Oakland, while the broad bayfront at Crown Memorial State Beach faces the city skyline and the Bay Bridge. Victorian and early-20th-century houses give streets around Park Street a residential character, alongside independent shops and restaurants. At Alameda Point, the former Naval Air Station is home to the USS Hornet Museum aboard the retired aircraft carrier USS Hornet, recalling the area’s naval and aerospace connections. Browse additional webcams from the East Bay to extend your view of San Francisco Bay.
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