The Dane County Sheriff's Office is investigating the death of an Edgerton man after a motorcycle crash in the Town of Albion. Deputies say the 54-year-old failed to negotiate a curve on Highway 51 north of Albion road around 10:30 Wednesday night. He apparently hit a road sign and was not wearing a helmet. He was taken to Mercy Hospital and Trauma Center in Janesville, where he was pronounced dead. His name should be released after his family is notified.