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.
 

Just Posted

City puts closure of long-term mental health beds on hold

In response to public outrage over a proposal to suspend 41 permanent… Continue reading

Thousands take to San Francisco streets in Climate Strike

The protesters are calling for urgent action on climate change, including putting pressure on local elected leaders to support more drastic steps.

Here we go again – new dog rules in Golden Gate National Recreation Area

The GGNRA released a 2019 Superintendent’s Compendium that makes significant changes that appear to implement parts of the ill-fated Dog Management Plan.

Power outage impacts Muni subway service

The San Francisco Municipal Transportation Agency said Friday morning that a power… Continue reading

SF Symphony debuts John Adams’ lively salute to MTT

Pianist Daniil Trifonov joins orchestra in enaging program

Most Read