The Muang Ang Thong Police Station was alerted to the accident at 10.30pm on the exit way of an elevated road in Tambon Ban It.
The motorcyclist was identified as Yutthana Jamnongson, 43. He suffered serious injuries to his face and body.
Police said the man was apparently driving very fast and lost control at the bend next to the elevated exit. He crashed into the pole of the barbed-wire fence and his body was hurled 10 metres from the accident site.