Title:Posey Tube technical drawings, 1924 October
George A. Posey Tube technical drawings
Alameda County, California Estuary Subway technical drawings
Creator/Contributor:Posey, George A., engineer.
Creator/Contributor:Murray, Howard Slater, former owner.
Creator/Contributor:Alameda County (Calif.), Board of Supervisors,, commissioning body.
48 technical blueprints (sheets 1-25B, 26A-46, 51) covering numerous aspects of the construction of an underwater vehicular
tunnel between the cities of Oakland and Alameda, California.
Underwater tunnels -- California -- Oakland -- Designs and plans
Underwater tunnels -- California -- Alameda -- Designs and plans
Underwater tunnels -- Drawings
Underwater tunnels -- Design and construction
Posey Tube (Oakland, Calif., and Alameda, Calif.) -- Designs and plans
Posey Tube (Oakland, Calif., and Alameda, Calif.) -- Drawings
Title devised by cataloger.
Commissioned by : Alameda County Board of Supervisors.
Posey Tube technical drawings, BANC MSS 2018/262, The Bancroft Library, University of California, Berkeley.
Gift of Beth Crocker, Margaux Murray, and Douglas Murray; 2017.
The Posey Tube (also known as the George A. Posey Tube) is an underwater tunnel located between the cities of Oakland and
Alameda, California.The tunnel was formally named and dedicated as the George A. Posey Tube on October 27, 1928 by the Alameda
County Board of Supervisors in honor of the tube's chief engineer, County Surveyor George A. Posey. The Posey tube replaced
a swing bridge that interfered with maritime traffic. The ventilation buildings that house the exhaust and fresh air fans
are built in an art deco style. The ventilation of toxic vehicular exhaust fume design was modeled on that of the Holland
Tunnel (New York) ventilation system, and Ole Singstad, who had designed the pioneering ventilation system of the Holland
Tunnel, consulted on the project.
George Addison Posey (September 28, 1883-August 3, 1932) was an engineer who designed a number of notable structures around
Oakland, California including the Leimert Bridge to Oakmore Highlands and the George A. Posey Tube between Oakland and Alameda.
He was also Alameda County Surveyor.
From the library of Howard Slater Murray.
Blueprints (reprographic copies).
48 59 x 92 cm
BANC MSS 2018/262 oversize folder 1
BANC MSS 2018/262 oversize folder 2
BANC MSS 2018/262