West Des Moines police are investigating an early morning accident that sent a car careering off Interstate 235 on to 22nd Street below.
The incident happened just before 2 a.m. Thursday morning.
Police say the driver was heading west on the interstate when she lost control, hit a guardrail and dropped over 15 foot onto a concrete barrier in the northbound lanes of 22nd Street.
The woman had to be cut out of her SUV.
Police say at this time they don't know what caused the woman to lose control, but they are investigating.
She was the only one in the vehicle and no other cars were hit when her SUV landed.