A massive pileup on Interstate 39/90 between Janesville and Beloit, Wisconsin, closed the highway for several hours on January 27th. The pileup involved 50 cars, according to reports, and left 21 people injured.

The accident was caused by a band of heavy snow that blanketed the area, leading to icy roads and poor visibility. Witnesses reported that the pileup began when a semi-truck jackknifed and several other cars crashed into it.

The Wisconsin Department of Transportation issued a traffic alert, warning drivers to exercise caution and avoid the area if possible. The highway was closed while emergency personnel worked to clear the scene and tend to the injured.

After several hours, I-39/90 was reopened in both directions. The Wisconsin State Patrol is still investigating the accident and has not released any additional information.

This story is still developing. Check back for updates.