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Airplane View . . . San Francisco-
Oakland Bay Bridge looking
toward Oakland
VIEWING the world's largest bridge, 84 miles long (5
miles over water), which will connect Alameda and
San Francisco counties.
Each individual tower of the bridge, standing more than
700 feet high from the base of its pier on the floor of the bay
to its tip, represents a construction job comparable to that of
a great skyscraper 60 stories high.
There are four coats of paint on the San Francisco-Oak-
land Bay Bridge. It is estimated to take 200,000 gallons of
paint, 25,000 gallons of which is aluminum. The aluminum
paint on the Bridge causes the structure to be bright—even
on its under-side-from the light reflected on the water.
Cable consists of thirty-seven strands, containing 472
wires each, a total of 17,464 wires; total length of wire,
70,000 miles. Diameter of cable, 28% inches; weight of
cable per foot, 1,750 pounds. Total weight of cable wire,
18,700 tons.
Center Anchorage
This structure has a cubiture twice that of the Russ Build-
ing (San Francisco). It rises 504 feet above the floor of the
Bay, 282 feet of which will be above the water line when
completed. It is 197 feet long and 92 feet wide. Imbedded
135 feet in the concrete of the anchorage are the evebars. to
which is attached the A-frame. Eyebars fastened to this
frame in turn hold the cable strands.
Ship clearance of the bridge will be from 200 to 218 feet
above the surface of low water.
PICTURE NO. 10-D
PUB. BY J. C. BARDELL SAN FRANCISCO. CALIFORNIA
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