Milwaukee Police are investigating a serious crash that happened around 6:15 a.m. on March 14 in the 2000 block of W. Locust Street. An adult female in the street was struck by a school bus that was traveling westbound on W. Locust Street. The female suffered serious injuries and was transported to a local hospital. The bus driver, a 46-year-old woman, stayed at the scene and is cooperating with police. It is still being determined the circumstances that led to the crash.