A charter bus carrying 42 passengers tried to go under an overpass bridge that it was just too tall to navigate. At least 30 people were injured in the incident.
Four people reportedly had to be cut free from the wreck, as firemen at the scene worked to free several passengers who were trapped. Boston EMS used the jaws of life to peel back the roof of the bus to free them.
Some were feared to be in a critical condition and were taken to local hospitals.
According to Boston Emergency Medical Services, 34 people were injured overall, with one kept in hospital with life-threatening injuries. Three others were seriously injured and 28 passengers suffered minor injuries.
The Calvary Coach private bus was on its way from Harvard University to Pennsylvania when its struck the Western Avenue bridge in Boston. Passengers consisted of 38 students and chaperones on a collegiate bus tour from Pennsylvania.
About the location, Boston Fire Acting Chief, Ron Harrington said, "Soldiers Field Road heading inbound, the top of the bus caught the bridge on Western Ave."
Authorities expect this particular part of the road to be closed indefinitely and crews on the scene are attempting to hoist the bus up off the road with the use of a crane.