MADISON, Wis. (AP) — The Wisconsin State Patrol says four people were killed and seven people were injured in a series of crashes in Columbia County. The first crash about 3:30 a.m. Friday involved two semis on Interstate 90/94/39 at state Highway 60 near Lodi, the patrol said. Shortly after 5 a.m., a straight truck piled into the first crash scene, injuring two state troopers and a highway worker. The troopers were treated and released, according to authorities. The worker remains hospitalized. About 6:45 a.m., another multi-vehicle crash happened near county Highway K as traffic moved around the earlier crash scene. Troopers say a semi traveling at highway speeds created a chain-reaction crash involving eight vehicles, including another semi, a dump truck and passenger vehicles.
