Idaho State Police is investigating a crash that occurred on westbound US Highway 12 milepost 17.5 at 10:38 am this morning. A Ford F150 was traveling west on the highway when it crossed the eastbound lane onto the shoulder. The pickup continued west along the eastbound shoulder and crossed both lanes to the westbound shoulder where it impacted the guardrail. The female driver was transported to a hospital in Lewiston via ambulance. The driver was not wearing a seatbelt. The westbound lane was blocked for one and a half hours. The investigation is ongoing.