A crash on the can of worms involving five vehicles and a semi Wednesday afternoon injured four people, including at least one child.

At 3:43 p.m., emergency crews responded to a crash at U.S. Highway 53 on the Interstate 35 northbound off-ramp and the Interstate 535 ramp to Wisconsin.

According to Minnesota State Patrol spokesperson Sgt. Neil Dickenson, a semi was traveling south on Highway 53 and approaching a traffic light when it hit five vehicles that were either stopped at the light or just beginning to move forward when the light changed.

Dickenson said four people were transported to local hospitals with non-life-threatening injuries.

Mark Herman, acting assistant chief of the Duluth Fire Department, told the News Tribune Wednesday evening that a child was taken by ambulance to a Duluth hospital.

“Even though we had injuries, it could have been a lot worse,” Herman said.

The State Patrol is investigating the crash and said the semi will be inspected for a possible equipment failure.

“The tractor-trailer may have experienced brake failure and was unable to stop,” Dickenson said.

According to the Minnesota Department of Transportation’s website, multiple ramps on the can of worms were closed for at least four hours.