The 78-year-old bridge in the United States was blown away in an instant

The destructive power of nearly 5,000 kilograms of the dynamite of Kosciuszko Bridge across the river in New York, USA, turned into ash in an instant.

The Kosciuszko Bridge, a 78-year-old bridge connecting Brooklyn and Queens of New York City, was blown off at 8 am yesterday to make way for a new bridge widening project across the Newtown Creek tributary, according to New York Post. The broken bridge sections fell at the foot of the new bridge, built parallel to the side.

The video returned by a reporter from above showed explosives activated along the bridge before thick smoke and dust clouds flew into the air.

Some people living near the bridge were startled by the sound and shock from the big explosion. Brooklyn-Queens Expressway traffic is interrupted for 10 minutes before the explosion takes place. Andrew Cuomo, New York governor, watched the whole process on a boat and joked that it was an "energetic collapse".

Kosciuszko Bridge 78-year-old bridge.

The demolition team used a horizontal beam frame to place nearly 1,000 explosive blocks weighing 5kg at each span. The explosion took place just two months after the first demolition phase, in which a stretch of more than 90m of the bridge was lowered by cables to barges and taken to a recycling center in New Jersey.

Authorities estimate that 10 million tons of steel from the bridge will be recycled as scrap metal at the end of the process. The new suspension cable bridge with 4 lanes and a pedestrian or pedestrian lane will open in 2020.