The Illinois State Police out of District 11 report and serious accident in Clinton County on Friday at 3:23 PM on Interstate 64, near milepost 34 or the Silver Creek Overpass.  According to the preliminary report, a pick-up truck, driven by 75-year old Louis A. Billhartz of Belleville, was traveling eastbound on I-64 in the right lane near milepost 33.  As it crossed over the Silver Creek bridge overpass, it lost traction on the snow or ice covered bridge, and began to slide and spin.  The truck went off of the road to the south and struck the guardrail.  It then overturned, and rolled down the shoulder embankment.  Billhartz was wearing his seatbelt, but he was partially ejected and seriously injured.  He was initially transported to Saint Joseph’s Hospital in Breeze and he was then airlifted to Saint Louis University Hospital, where he was last reported to be in serious, but stable condition.  There were no other vehicles or persons involved in the crash.