Video simulation shows new Bay Bridge’s expected response to an earthquake

The expected effects of a major earthquake on the new eastern span of the Bay Bridge, which is under construction, have been explained by Caltrans in a new video simulation.

Construction of the new eastern span between Oakland and Yerba Buena Island, which will consist partly of a self-anchored suspension span and partly of a flat skyway, is expected to be finished by 2014.

The span is being rebuilt to better protect motorists from earthquakes. The western span was retrofitted to improve its performance in earthquakes.

Saturday marks the 20th anniversary of the 1989 Loma Prieta Earthquake, which knocked out a section of the eastern span, leading to the death of one woman.

The new video shows the new bridge rocking and wavering under the effects of an earthquake. It also explains a number of devices that are being incorporated into the bridge’s design to help protect it from earthquakes, such as cable bands, viscous dampers and shear link beams.
 

Bay Area NewsGovernment & PoliticsPoliticsUnder the Dome

If you find our journalism valuable and relevant, please consider joining our Examiner membership program.
Find out more at www.sfexaminer.com/join/

Just Posted

The City requires the recycling or reuse of debris material removed from a construction project site. <ins>(Emma Chiang/Special to S.F. Examiner)</ins>
<ins></ins>
Permits proposed for haulers of construction debris to achieve zero-waste

San Francisco plans to tighten regulations on the disposal of construction and… Continue reading

(Justin Sullivan/Getty Images/TNS)
Newsom says California will review FDA-approved COVID-19 vaccines before releasing to public

By Taryn Luna Los Angeles Times California will review the safety of… Continue reading

Rachael Tanner, left, testifies virtually before the Board of Supervisors Rules Committee Monday, October 19, 2020. (SFGOV courtesy art)
Rachael Tanner set to become SF’s next Planning Commissioner

Rachael Tanner is expected to serve as the newest member of the… Continue reading

People exercise along the closed Great Highway on Friday, Oct. 2, 2020. (Kevin N. Hume/S.F. Examiner)
Could the Great Highway become a great city park?

Permanent closure would require extensive public outreach, safety and traffic management plans

Flames and smoke overtake a tree as the LNU Lightning Complex fire spreads in Fairfield, California on August 19, 2020. (JOSH EDELSON/AFP via Getty Images/TNS)
Many wildfires near full containment, but officials fear continuing hot weather

By Molly Burke The Sacramento Bee Thousands of firefighters continue to battle… Continue reading

Most Read