Ask The Times: How are old bridge columns removed from Lake Lanier? - Gainesville Times

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Ask The Times: How are old bridge columns removed from Lake Lanier?

The first cars use the new Boling Bridge to cross Lake Lanier Friday, Aug. 3, 2018, shortly after the opening of the new Boling Bridge. The $19.7 million bridge, which crosses the Chestatee River as it flows into Lake Lanier, had been set to open to traffic at 11 a.m. Thursday, Aug. 2. - photo by Scott Rogers

08042018 BOLING 4.jpg — The first cars use the new Boling Bridge to cross Lake Lanier Friday, Aug. 3, 2018, shortly after the opening of the new Boling Bridge. The $19.7 million bridge, which crosses the Chestatee River as it flows into Lake Lanier, had been set to open to traffic at 11 a.m. Thursday, Aug. 2. - photo by Scott Rogers

After an existing bridge (Bolding Mill on Dawsonville Highway, for example) is removed, how are the old bridge columns are removed from Lake Lanier?