Richfield, Idaho (KLIX) A woman was killed while riding her motorcycle just east of Richfield Saturday. Idaho State Police say 43 year old Jan Boline of Idaho Falls was traveling on highway 26 when she lost control of her motorcycle, crossed the center line and collided with a semi. The Twin Falls truck driver tried to avoid hitting the motorcycle. The driver was not injured in the crash.  Boline was not wearing a helmet. Right now state police are investigating. It’s unknown if other factors are to blame for the crash.