There was an accident involving a motorcycle Wednesday morning on Highway 180. DPS officials say the accident happened about 20 miles northwest of Flagstaff at around 10:20 a.m. A male was riding the motorcycle when he lost control while traveling on westbound Highway 180. The man fell off the bike and was seriously injured. The highway was closed temporarily to land a medical helicopter. He was flown to Flagstaff Medical Center for treatment. The man was not wearing a helmet at the time of the accident.