Troopers responded to the accident in a cornfield near School House and Airport Roads in Alexandria just before 9:55 a.m., NJSP Sgt. Alejandro Goez told DailyVoice.com.
The woman was found conscious and taken to a nearby hospital via Atlantic Air 1 medical helicopter.
The Quakertown Fire Company also assisted at the scene.
Click here to follow Daily Voice North Hunterdon and receive free news updates.