The Fresno County Coroner's office has identified the man as 26-year-old Michael Yepez of Fresno.
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Police are now saying they believe alcohol was involved.
It happened just after 3 am on Clovis at Jefferson Avenue, which forced the closure of Clovis Avenue in both directions near Barstow.
Police say Yepez was headed southbound on Clovis Avenue when he missed the bend in the road and hit a telephone pole.
A passerby saw him on the road and called for help, and he was rushed to a hospital.
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Police do not know if the man was wearing a helmet.
All road closures have been lifted.