Route 31 was closed for about 90 minutes early Wednesday morning after a vehicle hit a utility pole and knocked down power lines, authorities said.
Undersheriff Patrick Gengler of the Kane County Sheriff's Office said the vehicle hit the pole near Silver Glen Road at about 4 a.m.
One person in the vehicle was injured and transported to a hospital with nonlife threatening injuries, he said.
The roadway was reopened at about 5:30 a.m., he said, after ComEd crews arrived on the scene and removed the power lines blocking the roadway.
He added there are no details on the driver or the number of occupants in the car, and whether charges will be filed later today.
He said the accident is still under investigation.