articleThe Brief A fatal crash shut down northbound I-41 near Rawson on Wednesday night. The cause of the crash remains under investigation. A fatal crash shut down all northbound lanes of I-41/94 at Rawson Avenue near Oak Creek late Wednesday night, July 29. The Milwaukee County Sheriff's Office said the crash involved a semi and car. FREE DOWNLOAD: Get breaking news alerts in the FOX LOCAL Mobile app for iOS or AndroidThe cause of the crash remains under investigation.