Update, 9:15 p.m.: The Arborway is clear and open again to traffic, State Police report.
Massachusetts State Police report four teenagers and two adults were seriously injured in a crash around 2 p.m. State Police say their initial investigation shows that an SUV carrying the teens "rolled over center line, struck a pickup with two adults in the opposite lane." AlertNewEngland reports two child car seats were found ejected from vehicles, but that no young children were in them at the time.
The Arborway was shut between Centre/the Jamaicaway and the Forest Hills rotary.
Boston Police advise:
Seek alternate route.
As of 4:40 p.m., motorists reported traffic across the area was a mess. Scott Bishop reports:
It took 35 minutes to drive one mile up Washington towards Rozzie Village.
The Suffolk County District Attorney's office reports:
The teens have been transported to Beth Israel Deaconess Medical Center, Boston Medical Center, and Children's Hospital, with injuries ranging from relatively minor to life-threatening. The adults have been transported to Brigham and Women's Hospital, one of them with life-threatening injuries and the other expected to survive.
No charges have been sought at this time and we do not expect them imminently: this is a major collision with many victims and witnesses, and investigators will need time to examine the evidence from many sources before making a charging decision.