Self Anchored Suspension

At dawn this morning, workers began slowly lifting the first 2.3 million pound, 525-foot section of the new Bay Bridge tower into place.

The first of 20 steel tower sections for the San Francisco-Oakland Bay Bridge's Self-Anchored Suspension Span (SAS) is being lowered onto a marine foundation where it will be bolted to concrete and steel piles that reach 196 feet below waterline into the bedrock.

Learn about more seismic innovations going into the building of the Bay Bridge .

July 28, 2010 10:07 PM PDT

Photo by: James Martin/CNET