Alignment Eastern span replacement of the San Francisco–Oakland Bay Bridge

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alignment alternatives in 1998


alignment alternatives included (see image @ right details):



s4: southern alignment, curved, shorter route northern alternatives.
n2: two-bend northern alignment close existing bridge.
n6: single bend alignment, main span tending northward curve eastern approach viaducts, being parallel existing double-deck truss causeway approach.

the last alternative selected, presents superior view of san francisco west compared others views obscured yerba buena island. more northerly track encounter more difficult geotechnical circumstances.








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