(EMMETT TOWNSHIP) -- A 36-year old Almont man remains hospitalized after crashing his motorcycle on I-69 Tuesday night. St. Clair County Sheriff Tim Donnellon says the man was traveling west near Kinney Road in Emmett Township shortly after 11 p.m. when he left the roadway and crashed. The Lapeer County man was transported to Port Huron Hospital and then air-lifted to a Detroit area hospital for further treatment. Westbound I-69 was closed for about 2-hours during the investigation. Deputies say speed is believed to be a factor in the crash.