How Bridges Are Retired (With 153 Pounds of Explosives)

#Video

Sat, Feb 25th, 2012 21:00 by capnasty NEWS

The Ohio Department of Transportation "retired" the Fort Steuben Bridge via controlled demolition using 153 pounds of explosives. The bridge, which was built in 1929, was closed in 2009 because it was deemed structurally deficient and functionally obsolete once the Veterans Memorial Bridge replaced it. Check out the slow motion footage after the initial explosion below:

Crews used 490 shaped charges and 153 pounds of explosives that had been strategically mounted in 136 locations all over the bridge.

"Basically what we're doing is just cutting the steel. We're using almost like a remote torch but we'll be 500 feet away when we detonate it," said Doug Loizeaux of Controlled Demolition Inc.

The truss and cable sections of the bridge were blasted, which rotated the two main towers toward each shoreline. Just milliseconds later, the towers shot into sections, making it easier for crews to remove parts from the Ohio River.

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