Officials have released the name of the man who was found dead on Highway 12 in the town of Springfield on Monday morning.
Michael D. Beale, 36, of Madison, was the only occupant of the motorcycle that was found around 6:30 a.m., according to a release.
Deputies said excessive speed appeared to have caused the crash.
Beale was not wearing a helmet and was pronounced dead at the scene, police said.
Preliminary results from a forensic examination show Beale died as a result of the injuries he sustained in the crash, according to the release. Additional testing is underway.