This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

MINOOKA, Ill. — A rollover semi-truck crash has shut down Interstate 80 in the southwest suburbs.

The accident involving two semis happened before 4:30 a.m. Thursday on westbound I-80 near Ridge Rd. in Minooka.

The semi on the westbound side has been up-righted. The semi on the eastbound side is still on its side with boxes of produce scattered nearby.

Westbound I-80 is back open. Eastbound I-80 remains closed from Ridge to I-55. There’s currently about a four-mile backup approaching the detour EB I-80 at Ridge where traffic is forced off.

This is a developing story. Check back for details.

Read more: Latest Chicago news headlines

Six Flags Great America released the following statement regarding the shooting:

Six Flags dedicates our greatest amount of time, talent and resources to safety and security.

Layers of preventative measures both inside and outside the park are in place for the protection of guests and team members. We continue to review and enhance our protocol on a daily basis to ensure we are providing the highest level of safety.

Cameras placed in the parking lot and inside the park, uniformed and plain clothes patrols throughout the property, and advanced screening technology allow us to react quickly and provide important information. The park security team is joined by the Gurnee Police Department, who operates a substation at the park.

This evening, we are incredibly grateful to our team members who reacted in a professional manner to take care of our guests, and for the Gurnee Police Department for their on-going presence and commitment to Six Flags Great America.