California: Caltrans implodes Bay Bridge marine platforms

California: Caltrans implodes Bay Bridge marine platforms (Caltrans/CNN)

Engineers are taking out some of the last remnants of the original San Francisco Bay Bridge.

They conducted the first implosion Saturday, to remove 13-remaining piers of the east span of the structure.

The original 1936 bridge has been replaced with one that's earthquake safe.

The implosions will continue every other weekend until mid-November.

The state transportation department says it took steps to protect the environment and marine life.

Officials are using the so-called "bubble curtain" implosion technology that minimizes the impact on the ocean.

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