The pilot reported that while enroute to his destination, he experienced a loss of power to his left engine about 10 miles from the airport. Shortly after, the right engine experienced a loss of power, and the pilot maneuvered the airplane for an off-airport landing on a paved road. During the descent, the airplane struck power lines along the side of the road, causing substantial damage to the left wing. Upon subsequent investigation by a Federal Aviation Administration air safety inspector, it was determined that the airplane's fuel tanks were empty.