This week, Caltrans announced the demolition for the remaining 13 marine foundations of the original East Span of the Bay Bridge. The series of implosions to demolish the 1936 concrete structures are scheduled for six weekends, starting Labor Day Weekend, September 2, and then every other weekend through mid-November 2017. Caltrans will be combining multiple piers on certain demolition dates, allowing the demolition work to be completed a year ahead of schedule, saving taxpayers nearly $10 million.
Like the previous implosions, a blast attenuation system (bubble curtain) will be used to cut down noise and sound pressure waves from the explosive charges. Caltrans will continue to work with environmental and biological experts to monitor the area preceding, during, and after the blast to ensure no protected species is harmed. Each implosion is a coordinated effort to ensure limited environmental impact on the Bay and wildlife. Caltrans produced a news flash detailing the efforts of staff to limit that impact:
Last year, Caltrans successfully removed Piers E4 and E5 following the successful removal of Pier E3 in 2015. These innovative controlled charges have been shown to be more efficient and the environmentally preferable alternative to traditional marine foundation removal.
For safety and security reasons, the Bay Bridge Bike Path will be closed in the lead up to each implosion weekend, you can find the full schedule of closures here.
We’ll continue to post more updates on the action, traffic concerns, and other implosion related information so be sure to follow us on Twitter, @CA_trans_agency as we show the next implosion in action. Caltrans will also be livestreaming on YouTube.
Want to replay one of last year’s implosion? You can watch it here:
— CalSTA (@CA_Trans_Agency) October 15, 2016