Authorities are investigating the death of a Washington County man who was killed in a motorcycle crash on Interstate 70 westbound Monday night. They say the crash occurred shortly after 10 o’clock at the Murtland Avenue on-ramp in South Strabane Township. The Washington County Coroner’s Office has identified the motorcycle rider as 41-year-old Homer Howard Thomas Jr. of Washington. State Police say Thomas was driving a 2022 Harley Davidson motorcycle, entering the interstate – when he crossed into the center lane and into the path of a tractor-trailer driven by a 48-year-old man. Police said the motorcycle hit the passenger side of the truck and then slid. The interstate in that area was closed until around one o’clock Tuesday morning.