Overview

• Deputies say a passenger car likely failed to yield at a stop sign before colliding with a southbound semi at Highway 175 and County Road S in the Town of Addison late Saturday morning.
• The 32-year-old Ripon driver was extricated and taken to Froedtert, where she died, while the 53-year-old Pennsylvania semi driver was treated for minor injuries and released.
• The intersection was closed for about four hours as reconstruction specialists and State Patrol truck inspectors processed the scene with assistance from multiple local agencies, marking Washington County’s fifth fatal motor vehicle crash of 2025.
• In an unrelated case early Sunday, Mount Pleasant officers on foot patrol heard gunfire near 22nd Street and Mead Street and immediately rendered aid as area police and fire agencies converged.
• A 22-year-old man suffered non-life-threatening injuries and a 19-year-old woman was airlifted to Froedtert for surgery and is stable, and police say there is no known ongoing threat to the community.