The crash was reported just before 2:45 a.m.
Miller was driving westbound when he left the roadway near mile post 47, where Ohio Route 4 splits from the interstate.
“He slowly drifted off the roadway,” said Lt. Brian Aller with the Springfield post of the OSHP.
The pickup truck went into a ditch and then flipped over and struck a fence before coming to rest in a field.
Miller was not wearing a seat belt at the time of the crash, but was not ejected from the vehicle, Aller said.
Troopers suspect alcohol may have played a role in the crash, which is still under investigation.
Snow had stopped earlier in the night and there did not appear to be ice on the roadway where Miller left the highway, Aller said.
Troopers requested the Clark County Coroner to respond shortly after arriving on scene.
This is the third fatal motor vehicle crash in Clark County in 2015 and the second in less than 24 hours.
Twenty-eight-year-old Jessica Crim, of Springfield, was killed in a one-vehicle crash on Old Columbus Road Monday morning.
Her brother Daniel Crim was driving the car and was critically injured. He was transported to Miami Valley Hospital. He was still listed in critical condition Tuesday afternoon.
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