To view our videos, you need to
enable JavaScript. Learn how.
install Adobe Flash 9 or above. Install now.

Then come back here and refresh the page.

Witnesses said a tractor trailer collided with a concrete railing on the elevated Park Avenue roadway around 4:15 p.m. Tuesday.

Fire officials said debris fell from the upper roadway onto the street below.

Witnesses described a chaotic scene.

"We were walking down the street, everything was normal and we heard a strange, crashing, popping above us, saw concrete starting to slowly fall," said one.

"We heard the truck strike the abutment on the Pershing Square Bridge," said another. "We then saw the awning collapse on a huge cloud of dust."

There are no reports of any injuries.