A Mount Vernon man was airlifted to St Louis with serious injuries after a single vehicle crash on I-57 last night.

It happened around 6:30 at the I-64 westbound entrance ramp from I-57 south.

State Police say 45 year old Roger Modglin of Mount Vernon was driving a semi pulling a box trailer when his semi left the road and hit several trees before turning over. Police say they suspect a medical issue was the cause of the crash.