Cottage Grove, WI (May 18, 2026) – A multi-vehicle crash caused lane closures on Interstate 94 near Cottage Grove on Sunday afternoon, May 17. The collision, involving four to five vehicles, was first reported around 3:48 p.m. near mile marker 248.
According to Dane County dispatch and the Wisconsin Department of Transportation, emergency units responded to the interstate after reports of the crash. Crews from Sun Prairie, Deer Grove, and Cottage Grove assisted at the scene.
The left eastbound and westbound lanes of Interstate 94 were temporarily closed while responders worked to clear damaged vehicles and manage traffic in the area. Officials said the lanes reopened at approximately 5:24 p.m.
Authorities have not confirmed whether any injuries were reported in the crash. Additional details regarding the cause of the collision or the vehicles involved have not yet been released, although it remains under investigation as officials continue reviewing the circumstances surrounding the crash.
We are thinking of everyone involved.
What Is Commonly Reviewed in Multi-Vehicle Interstate Crashes?
Multi-vehicle crashes on interstate highways are often reviewed by examining traffic flow, lane changes, and following distances between vehicles. Investigators typically assess whether sudden braking, congestion, or driver reaction times contributed to the chain-reaction collision.
Highway crashes involving several vehicles may also require analysis of roadway conditions and vehicle spacing at the time of impact. Damage patterns and debris locations can help determine the order in which vehicles collided.
When lane closures occur, investigators often work alongside roadway crews to safely document the scene before traffic resumes. In the early stages, details about injuries and contributing factors may remain limited while evidence is collected.
