The northbound onramp was blocked at I-229 & Rice Street Friday night, due to a single-vehicle rollover accident.
The crash happened around 9:30PM. The car ended up leaving the ramp and coming to rest in a ravine.
The male driver was trapped beneath the vehicle. Sioux Falls Fire Rescue had to use equipment to tip the car up to extract the man.
The driver was conscious and alert afterward, but he was taken to the hospital by ambulance.
Trooper Jeremy Gaycke with the South Dakota Highway Patrol says alcohol may have been a factor in the crash. It is unknown whether speed was a factor. The crash and its cause remain under investigation.