A semi truck jack-knifed on icy I-43 in Wisconsin, killing one and injuring four.

A semi truck jack-knifed on I-43 north near Saukville, Wisconsin, on November 26, crossing into oncoming traffic and colliding with two vehicles, killing one person and injuring four others. The crash, which occurred just after 3 p.m. amid icy road conditions, led to a five-and-a-half-hour closure of northbound lanes. The driver of a 2013 Mercedes-Benz Sprinter died at the scene; the Ford Fusion driver suffered life-threatening injuries. Three others in a Subaru Forester sustained severe but non-life-threatening injuries. A separate semi jack-knifed on southbound I-43 with no injuries. Authorities are investigating, citing winter weather as a contributing factor.