A DPS Trooper attempted to stop a motorcycle on Loop 336. The motorcycle fled from the Trooper. Just east of FM 1314 the motorcycle crashed into the end of the guardrail splitting the bike in multiple pieces. The driver has been transported to Conroe Regional Medical Center in critical condition with an amputated right foot, severe leg injuries. He was not wearing a helmet. Loop 336 is closed between FM 1314 and FM 3083.