Bus Crash Injures Dozens After Visit to Harvard U.

  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

    In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

    In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

    In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

    In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)

  • Emergency personnel remove passengers at the scene of a bus crash, Saturday, Feb. 2, 2013 in Boston. Authorities say a charter bus heading from Harvard University to Pennsylvania has struck a bridge in Boston, injuring 33 people. (AP Photo/The Boston Herald, Stuart Cahill)  BOSTON GLOBE OUT; METRO BOSTON OUT; MAGS OUT; ONLINE OUT

    Emergency personnel remove passengers at the scene of a bus crash, Saturday, Feb. 2, 2013 in Boston. Authorities say a charter bus heading from Harvard University to Pennsylvania has struck a bridge in Boston, injuring 33 people. (AP Photo/The Boston Herald, Stuart Cahill) BOSTON GLOBE OUT; METRO BOSTON OUT; MAGS OUT; ONLINE OUT

  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)
  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)
  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)
  • In this photo released by the Boston Fire Department via Twitter, firemen work to remove injured passengers from a bus that hit an bridge as it traveled along Soldiers Field Road in the Allston neighborhood of Boston Saturday night, Feb. 2, 2013. Officials said the bus carryinyg 42 people was traveling from Harvard University home to Pennsylvania when it struck the overpass. (AP Photo/Boston Fire Department)
  • Emergency personnel remove passengers at the scene of a bus crash, Saturday, Feb. 2, 2013 in Boston. Authorities say a charter bus heading from Harvard University to Pennsylvania has struck a bridge in Boston, injuring 33 people. (AP Photo/The Boston Herald, Stuart Cahill)  BOSTON GLOBE OUT; METRO BOSTON OUT; MAGS OUT; ONLINE OUT

Boston — The scene could hardly have been more frightening for a Pennsylvania high school student just returning from a tour of Harvard University when the bus she was on slammed into an overpass, injuring dozens of passengers.

She did what most kids would do. She called her mother.

“She was screaming and crying and saying that the roof was caving in and that she couldn’t see anything, and she hit her head and she hurt her arm,” said Teresa Merrigan, describing the call from her daughter Alana.

Alana and the 41 others on the Calvary Coach bus had just begun the hours-long journey back to the Philadelphia area late Saturday.

Thirty-five people were injured in the crash, Massachusetts state police said. One remained hospitalized in critical condition, four were in stable condition, one was in serious condition and one was awaiting discharge last night, they said.

The driver, Samuel J. Jackson, was trying to navigate Boston’s confusing maze of roads and rotaries, famously challenging to out-of-towners.

He looked down at his GPS and looked back up and saw the bridge but was too close to avoid hitting it, Ray Talmedge, owner of the Philadelphia-based bus company, told WCAU-TV.

Thirty-five people were injured in the crash, Massachusetts state police said. One person was hospitalized with life-threatening injuries and three with serious injuries, the Boston Emergency Medical Services said.

Some passengers were trapped for more than an hour as rescue crews worked to free them, Massachusetts state police said. Firefighters stood atop the bus, part of its roof crumpled, and used boards to extract passengers, fire department photos showed. The bus suffered significant damage in the crash.

Authorities said the bus did not belong on Soldier’s Field Road, a major crosstown street where a 10-foot height limit is in place and oversized vehicles are not allowed.