The crash occurred just before 11 p.m. in Bethel between exits 8 and 9, where responders from Bethel, Danbury and Brookfield converged on the scene.
Danbury Engine 24 was the first unit to arrive, finding the woman injured and unable to get out of a small minivan that was on its side, said James Gagliardo, public information officer of the Danbury Fire Department.
Lt. Ted Mourges coordinated the rescue effort while Deputy Chief Bernie Meehan worked with the chiefs of Stony Hill, Bethel, and Brookfield Fire Departments, along with EMS and the Connecticut State Police, to establish an incident command system, Gagliardo said.
Firefighters extricated the woman and placed her in the care of the Stony Hill Ambulance.
Firefighters also concentrated on limiting the hazards at the accident and controlling a traffic safety zone in which the responders worked.
The extent of the woman's injuries have not yet been released.
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