At 9:29 p.m. Saturday, the Bond County Sheriff Department responded to an accident near Dudleyville Avenue and Airport Road.
A man driving a motorcycle left the road and struck a gas line.
Bond County Ambulance, Greenville Fire Protection District, Air Evac Lifeteam, and Ameren personnel were called to the scene. The motorist was air-lifted from the scene.
Further information has not been made available.