Caltrans Prepares to Implode Old Bay Bridge Pier E3

On Saturday, November 14, 2015, the largest support pier of San Francisco’s iconic Old Bay Bridge East Span will be demolished with a controlled, underwater implosion lasting six seconds.

The event is part of ongoing efforts to dismantle the Old Bay Bridge East Span, which was replaced with a new span that opened two years ago, in September 2013.

The implosion will be contained by a blast attenuation system, which includes an “attenuation mat” placed over the implosion, and a “bubble curtain,” that will encircle the pier underwater. The bubble curtain was designed by Wood Harbinger. This system creates a barrier of bubbles that will dampen the shock of the implosion by 80%, helping protect marine wildlife in the bay environment from the effects of the implosion.

Check out the video from Caltrans detailing final preparations for the Pier E3 implosion and how the blast attenuation “bubble curtain” works!

For more information about the Old Bay Bridge Pier E3 implosion, check out Caltrans’s website: http://www.dot.ca.gov/e3implosion/

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