I HAD ENTERED AN INTERSTATE FROM AN ON RAMP. I ACCELERATED TO GET VEHICLE UP TO SPEED AND SET THE CRUISE CONTROL. I APPROACHED A SHARP CURVED AND ATTEMPTED TO RELEASE THE SPEED CONTROL BY HITTING THE BRAKES. THE VEHICLE DID NOT STOP AND CONTINUED TO STAY MOVING AT 55 MPH. I AVOIDED THE OUTSIDE LANE AND THE TRAFFIC THAT I WAS MERGING INTO BY GOING INTO THE MEDIAN. THE VEHICLE HIT AN ELEVATED MAN HOLE IN THE MEDIAN AND WENT AIRBORNE AND HIT A BRIDGE OVERPASS SUPPORT HEAD ON. I SUFFERED MULTIPLE FRACTURES DUE TO THE COLLISION. *TR