To the type of men who settled the West, there has been a challenge to the word
IMPOSSIBLE. Such men were the explorers who heard it was IMPOSSIBLE to sail
around Cape Horn. Nevertheless, they did it. Later the Pioneers were told it was
IMPOSSIBLE to reach the West Coast with their covered wagons. They came.
The history of the West is a record of IMPOSSIBLE achievements ... building railroads
through the Sierra Nevada and the Cascades ... scaling heights in San Francisco and Seattle
with cable railways ... damming rivers deeply etched in forbidding canyons ... developing
great industries on the outskirts of the Nations markets.
But one great dream seemed never to be realizedthe bridge across San
Francisco Bay. The vision wasnt lacking ... that bridge has spanned the imaginations of a
score of western leaders: William Tecumseh Sherman, George F. Allardt,
Leland Stanford ... even Emperor Norton! But all of these were told the distance was too
great, the tides too swift, the Bay too deepand the bottom of the Bay was mud
and silt, unsuitable for anchoring piers. When extensive borings showed that a solid rock
ridge underlies the mud, the rock was said to be too far235
feetbelow the surface of the water. No known method of construction could
sink a pier to such a depth.
Once again that challenging word: IMPOSSIBLE!
But, again, the IMPOSSIBLE has been done. You can see in this photograph that high
towers stand solidly in the Bay. A double deck of steel reaches out almost a mile from the
Oakland fill. Just beyond the far end are piers that reach down from 170 to 242 feet. On the
other side of Yerba Buena Island, piers supporting the suspension towers plumb rock
bottom at 180, 105, 220, 233 and 100 feet.
The bridge is already about half complete. All the foundations, the piers, are finished. Four
more truss sections, and one cantilever, will unite Oakland and Yerba Buena. On the
suspension side, the central anchorage must be crowned and soon the cables will be spun.
IMPOSSIBLE? You can see for yourself.
In the special field of construction, we find that machinery ... and the fuels and lubricants
upon which efficient machinery depends ... have kept pace with the men who apply it. The
vision and zeal of our own engineers is reflected in the faultless service of Associated fuels
and lubricants on the job. Flying A gasoline ... other Associated fuels ... Cycol motor oils
and greases ... and a long line of Associated Industrial Lubricants are setting a record in
dependability and stamina.