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

Legislation by Supervisor Rafael Mandelman would require The City to add enough new safe camping sites, such as this one at 180 Jones St. in the Tenderloin, to accomodate everyone living on the street. (Kevin N. Hume/S.F. Examiner)
City would create sites for hundreds of tents under new homeless shelter proposal

Advocates say funding better spent on permanent housing

A construction worker rides on top of materials being transported out of the Twin Peaks Tunnel as work continues at West Portal Station on Thursday, August 16, 2018. (Kevin N. Hume/S.F. Examiner)
SFMTA’s poor track record on capital projects risks losing ‘public trust’

Supervisors say cost overruns and delays could jeapordize future ballot revenue measures

Roger Marenco, president of operators union TWU Local 250-A, speaks at a news conference outside the Muni Kirkland Yard announcing Muni will not be increasing fares on Wednesday, June 10, 2020. (Kevin N. Hume/S.F. Examiner)
SFMTA’s union leader encourages riders to say ‘thank you’ to their Muni operators

A conversation with Roger Marenco, president of Transport Workers Union of America, Local 250A

San Francisco’s live music clubs have been closed for more than a year. (Twitter screenshot)
S.F. venue recovery fund begins accepting grant applications

Entertainment presenters may apply from April 21-May 5

Most Read