Dozens of high school students injured in Massachusetts bus accident

Posted at 7:04 PM, Feb 03, 2013
and last updated 2013-02-03 19:04:14-05

BOSTON, MASSACHUSETTS (PIX11)– A high school field trip in Boston ended in chaos when the school’s charter bus hit a bridge.

35 students and their chaperons were injured in the crash on the way back from Harvard University.

Authorities say the driver did not yield to a low-clearance warning sign causing the bus to crash.

Four people suffered serious injuries, one of which is life-threatening

It took more than an hour for rescue crews to free some of the passengers.