A driver was flown to an area hospital and another was also hurt in a crash Wednesday afternoon on Interstate 495 in Littleton, Massachusetts.
State police told NBC10 Boston one vehicle crossed into the opposite lane of travel around 4:40 p.m., hitting a vehicle going the other direction.
The driver of the first vehicle suffered life-threatening injuries and was airlifted to an area hospital. The other vehicle's driver suffered minor injuries.
The Massachusetts Department of Transportation said just after 5 p.m. that the southbound side of Interstate 495 was closed before Exit 79. A few minutes later, MassDOT said both sides of the highway were closed.
As of 6:40 p.m., two northbound lanes had reopened, while the southbound side remained closed. By about 8 p.m., all lanes were moving again.
No further details were immediately available.