The man, who was only identified as a Bristol resident, was reportedly injured in the accident and transported by the Duffield Rescue Squad to Holston Valley Medical Center for treatment.
Authorities said the man was delivering newspapers for the Bristol Herald-Courier.
According to the Scott County Sheriff’s Office, the driver was traveling along Angler’s Way Road near Clinchport when the wreck occurred.
Authorities said the box truck drove through a guardrail and down an embankment before stopping near the Clinch River. The accident caused the truck’s cab to flip forward.
The driver told responders that he lost control of the truck after falling asleep at the wheel around 10:30 p.m.
Shortly after the wreck, the driver reportedly managed to crawl out of the car and make his way under a bridge that spanned the Clinch River for shelter from heavy rains rolling through the area at the time.
The man was reportedly discovered at 7:10 a.m. Friday when a passer-by driving down Angler’s Way noticed damage to the guardrail. The passer-by reportedly managed to locate the injured driver under the bridge after exiting his vehicle and spotting the wrecked truck.